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Trig
Page 5
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sin/tan = ?
2 answers
asked by
Don
807 views
( sec -1 )(sec +1 ) = ?
2 answers
asked by
Don
765 views
cot (tan + cot) = ?
3 answers
asked by
Don
287 views
3.
In the figure below, the perimeter of the parallelogram ABCD is (6a + 8b + 29) and the perimeter of the triangle ACD is (3a +
1 answer
asked by
Keaton
431 views
Rewrite tan 88 deg in terms of its cofunction
How does that end up????
2 answers
asked by
Don
1,193 views
Use reduction identities to determine if the following statement is true or false:
tan (A-B) = tan (B-A) Is this starement True
1 answer
asked by
Don
452 views
cos45cos25 - sin 45sin25 = ??
a. cos70 b. sin70 c. cos 20 d. sin 20 which answer is correct ?
2 answers
asked by
Don
527 views
sin45cos25 + cos45sin25 = ??
a. cos70 b. sin70 c. cos20 d. sin 20 which answer is correct ??
4 answers
asked by
Don
358 views
If tanx = 2/3 tany = 1/2
then tan(x-y) = ?? a.7/4 b.7/6 c.1/8 d.8/6 which answer is correct ??
5 answers
asked by
Don
318 views
If sinx = 1/4 Find the exact value of cos2x
I used the formula for double angle identities : cos2x = 1-2sin^2x and got the answer
3 answers
asked by
Don
788 views
Half angle identities
Find exact values of a) cos 1/2 b) sin 1/2 c) tan 1/2 based on: cos = 1/5 greater than 270 deg less than
3 answers
asked by
Don
421 views
Half Angle Identities
cosx = 7/25 greater than 270 deg and less than 360 Determine cos 1/2x a. -7rt2/10 b. 7rt2/5 c.7/25 d.-4/5 I
1 answer
asked by
Don
327 views
Prove that
1 + tanAtanA/2 = tanAcotA/2 -1 = secA
2 answers
asked by
Kewal
1,033 views
If the center of a circle is at
(2,2) with a radius of 4 the equation of the graph would be : a) (x-2)^2 + (y-2)^2 = 16 b)
2 answers
asked by
Don
1,132 views
The radius of:
(x+2)^2 + (y-3)^2 =9 is 3 is this correct?
1 answer
asked by
Don
266 views
The center of the circle
(x+2)^2 + (y-3)^2 =1 is a. (2,3) b. (-2,3) c. (2,-3) d. (-2,-3) I believe b. is the answer, is that
1 answer
asked by
Don
256 views
the center of a circle
x^2 + y^2 + 8y =1 is a. (0,-2) b. (0,4) c. (0,1) d. (0,-4) I believe the answer is (0,4) Am I correct ?
6 answers
asked by
Don
319 views
the horizontal speed of an airplane is 183mph. the magnitude of the plane's velocity is 200mph. write an expression describing
1 answer
asked by
luckybee
441 views
Proving Identities:
2 columns (tan + cot)^2 = sec^2 + csc^2 I'm having trouble breaking down the left side to = the right side..
7 answers
asked by
Don
425 views
(sin/cos)/ ( 1/cos - 1) = I'm stumped
5 answers
asked by
Don
347 views
The question is:
Set up a 2 column proof to show that each of the equations is an identity. Transform the left side to become the
2 answers
asked by
Don
516 views
IfA=340°, prove that
2cosA/2 = -(v1+sinA) - (v1-sinA)
3 answers
asked by
Kewal
465 views
(x+3)^2/4^2 + (y-2)^2/5^2
The location of the Foci are at: a.(-3,-1) and (-3,-5) b. (-3,2) and (-3,5) c. (-3,-3) and (-3,7) d.
1 answer
asked by
Don
266 views
Find the speed in both radians per second and degrees per second for the hour
hand, the minute hand, and the second hand on a
2 answers
asked by
Al B.
621 views
what quadrant is this in and please explain... sin theta < 0, cos theta > 0
1 answer
asked by
Jen
374 views
If a plane takes off on runway 31 (N 31o W) and flies 4 miles, then makes a right (90o) turn and flies 11 miles, what bearing
2 answers
asked by
Melinda
592 views
tan(θ) = a (a ≠ 0), find cot(θ).
3 answers
asked by
Jimmy
1,738 views
Sketch a unit circle and label the terminal points corresponding to t= pi/4, 3pi/4, 5pi/4, 7pi/4.
Include the coordinates of each
3 answers
asked by
BreAnne
2,287 views
Write the following in terms of sin(θ) and cos(θ); then simplify if possible.
csc(θ) - cot(θ)cos(θ) =
2 answers
asked by
DALE
911 views
Solve
Log[8](log[5]x)=0
1 answer
asked by
Jody
454 views
Solve 5^2x -4(5^x)=12
1 answer
asked by
Lea
240 views
Prove (1+secx)/(tanx+sinx)=cscx
3 answers
asked by
Matt
358 views
Solve the following trig equation
2cos(x-π/6)=1
1 answer
asked by
Matt
356 views
Sarah used her calculator to find sin125 degrees . She wrote down sin125 degrees = -.57. How could Sarah recognize that her
1 answer
asked by
BreAnne
445 views
angle b=25 degrees, angle c=90
AB= 25 a. Find the length of side b to two decimal places. b. Find the length of side a to two
4 answers
asked by
BreAnne
1,157 views
Its a 30-60-90 triangle
there's a line in the center that= 10 a. What is the length of the hypotenuse of triangle ABC? b. What is
3 answers
asked by
BreAnne
604 views
a. What is the length of the hypotenuse of triangle ABC?
b. What is the length of the shorter leg of triangle ABC? c. What is the
3 answers
asked by
BreAnne
1,414 views
can you please simplify these in faction form?
(pi/3) +1=? (2pi/3) +1=? (3pi/4) +1=? (5pi/4) +1=? (5pi/3) +1=? thank you so much!
1 answer
asked by
BreAnne
384 views
Help please! Thank you!
If csc(theta)= -2 and theta lies in Quadrant III, find tan(theta).
3 answers
asked by
Mandy
802 views
if tan(x)=9/4, find cos(x) if pi<x<3pi/2
3 answers
asked by
Purplechick4
376 views
If sin(t)=4/5 & 0<t<pi/2, find the following: a)sin t(-t) b) sin(t-2pi) c)cos t d)cos(pi-t)
1 answer
asked by
Purplechick4
398 views
what is the amplitude, period, phase shift, and vertical shift of each equation?
1. y= A cos(B(x-3))+4 2. y=-2sin(2piX/3) 3.
1 answer
asked by
BreAnne
853 views
3-square root 2/ 1+square root 2
2 answers
asked by
Jay C
465 views
#1
(1/sinx)(sin^2x + cos^2x(sinx/cosx) )/(sinx + cosx) = (sinx + cosx)/(sinx+cosx) = 1 Reiny helped with this question but I
2 answers
asked by
Anonymous
581 views
Use a calculator to find θ to the nearest tenth of a degree, if 0° < θ < 360° and
csc(θ)=1.4307 with θ in QII θ=?
3 answers
asked by
Ben
2,219 views
When two bubbles cling together in midair their common surface is part of a sphere whose center D lies on the line passing
3 answers
asked by
blondie
646 views
A pilot is flying over a straight highway. He determines the angles of depression to two mileposts, 3 mi apart, to be angle x =
4 answers
asked by
Dan
1,795 views
prove(sinx/cosx+1)+(cosx-1/sinx)=0
1 answer
asked by
Katie
324 views
prove(sinx/cosx+1)+(cosx-1/sinx)=0
Please help asap!!!!! PLEASE
4 answers
asked by
Katie
3,149 views
Prove (cos^2t+4cos^2+4)/(cost+2)=2sect+1)/sect
1 answer
asked by
Katie
386 views
(cos^2t+4cos^2+4)/(cost+2)=(2sect+1)/sect
1 answer
asked by
Katie
359 views
prove sin(α+β)sin(α-β)=cos^2β-cos^2α
1 answer
asked by
Kathryn
291 views
A ship leaves port with a bearing of S 40 W. After traveling 7 miles, the ship turns 90 degrees on a bearing of N 50 W for 11
2 answers
asked by
Kathryn
595 views
Prove cos^2t+4cost+4/cost+2=2sect+1/sect
1 answer
asked by
Kathryn
706 views
prove sin(α+β)sin(α-β)=cos^2β-cos^2α
1 answer
asked by
K.T.
360 views
prove sin(α+β)sin(α-β)=cos^2β-cos^2α
please help... this is the only one I didn't understand out of all my homework...
2 answers
asked by
Katie
816 views
Prove cos^2t+4cost+4/cost+2=2sect+1/sect
1 answer
asked by
Katie
440 views
A ship leaves port with a bearing of S 40 W. After traveling 7 miles, the ship turns 90 degrees on a bearing of N 50 W for 11
1 answer
asked by
Katie
508 views
Prove sin(α+β)sin(α-β)=cos^2β-cos^2α
1 answer
asked by
Katie
343 views
Prove (3cosθ-4sinθ)^2+(4cosθ+3sinθ)^2=25
2 answers
asked by
Katie
537 views
Prove cos^2t+4cost+4/cost+2=2sect+1/sect
1 answer
asked by
Katie
1,177 views
A ship leaves port with a bearing of S 40 W. After traveling 7 miles, the ship turns 90 degrees on a bearing of N 50 W for 11
4 answers
asked by
Katie
674 views
Prove sin(α+β)sin(α-β)=cos^2β-cos^2α
3 answers
asked by
Katie
415 views
Please help. I can't get this problem at all.
When two bubbles cling together in midair their common surface is part of a sphere
3 answers
asked by
HELP
554 views
HELP!!!! I don't know how to do the trig identity with this problem
csc^4 x-cot^4x= Csx^2 x + cot^2x
2 answers
asked by
Quetzally
1,091 views
How do you do this?
1-sin^2x/csc^2 x-1
3 answers
asked by
Alicia
326 views
Solve Sinx=Cos2x-1 for all values between 0 and 2pi
2 answers
asked by
dfg
491 views
cos(3x)=-1
1 answer
asked by
One Directioner
272 views
4sin^(2)x-3=0
1 answer
asked by
Help
311 views
Prove: (cotx sinx)(secx-cosx)=sin^2(X)
2 answers
asked by
Blossom
906 views
Use the half-angle formulas to come up with an exact expression for each function value below. You do not have to simplify your
3 answers
asked by
Help
1,428 views
Solve the equation 2sin(2x) = cos x.
and Solve the equation cos^2(2x)–sin^2(2x)= (√3 / 2).
4 answers
asked by
Help
1,082 views
Why does 11.4(7pi/18)=133pi/30 ?
1 answer
asked by
Robin
364 views
A carousel with a 50-foot diameter makes 4 revolutions per minute.
a) Find the angular speed of the carousel in radians per
4 answers
asked by
Emily
3,854 views
y=2tan(x-1)
Find the period and phase shift.
2 answers
asked by
Lauren
496 views
y=sec(2x+1)
Find the period and phase shift. Sorry i'm really bad at these.
1 answer
asked by
Lauren
338 views
y=sin(2pi*x-pi)
find the amplitude, period, and phase shift
2 answers
asked by
Lauren
487 views
1)y=1-tan(3pi-2x) Find period and phase shift
2)y=-sin(5x+3) Find amplitude,period,and phase shift 3)y=1-sin(3pi-2x)Find
2 answers
asked by
Lauren
566 views
19pi/7
Which quadrant does the terminal side lie on?
4 answers
asked by
Jenn
1,465 views
Complete the following statement. (1-sinθ)(1+sinθ)
1 answer
asked by
Jenn
300 views
What is the supplement of 3pi/5?
2 answers
asked by
Jenn
496 views
Factor
4cos^2x+4cosx-1=0
2 answers
asked by
Katie
879 views
Find the supplement of pi/6
2 answers
asked by
YOLO
511 views
A ferris wheel has a 14 meter diameter and turns counterclockwise at 6 rpm.
a) Assuming that the center of the wheel is the
2 answers
asked by
Lisa
617 views
Rewrite 7pi/5 in degrees.
1 answer
asked by
Rina
320 views
can I please have help with these 3 questions?
1. Solve this equation graphically on the interval [0, 2ð]. list the solutions.
3 answers
asked by
BreAnne
592 views
How do i find the exact value of sin 15 using the half angle formula
3 answers
asked by
Briana
867 views
Can you show us how to use law of cosines to show that theta equals inverse cosine of (a^2 + b^2 -484)/(2ab) where a^2=(7+xcos
2 answers
asked by
Lisa
968 views
Can anyone help with this question.
Now suppose that, starting with the first row of seats, the floor of the seating area is
1 answer
asked by
Lisa
432 views
sin^4t-cos^4t/sin^2t cos^2t= sec^2t-csc^2t
i have =(sin^2t+cos^2t)(sin^2t+cos^2t)/sin^2tcos^2t then do i go
3 answers
asked by
Josh
2,499 views
Dalco manufacturing estimate that its weakly profit, P, in hundreds of dollars,can be approximated by the formula P= -4x²+8x+7,
2 answers
asked by
Alex
652 views
simplify the expression to a single term:
(1-2Sin^2 X)^2 + 4sin^2 X Cos^2 X I'm not sure how to start this or which identities to
3 answers
asked by
Anonymous
449 views
Ok i understand how to do these I'm just stuck on this one:
secx + tanx = 1
1 answer
asked by
Anonymous
387 views
Find the eccentricity of the ellipse.
x^2+7y^2=35
1 answer
asked by
Sarah
360 views
Find the radian measure of the central angle of a circle of radius r that intercepts an arc of length s.?
Radius, r=16 ft Arc
3 answers
asked by
Sue
1,696 views
Find two values of theta that satisfy the equation. give your answers in degrees (0degrees <theta<360degrees ) and radians
3 answers
asked by
Sue
2,003 views
what are the rectangular coordinates of
(-2(pi/6))? please help.
4 answers
asked by
BreAnne
291 views
The first 40 rows of seating in a certain section of a stadium have 25 seats, 28 seats, 31 seats, and so on. The 41st through
2 answers
asked by
sueann
687 views
Find sin2theta, cos2theta if csctheta=13/12 and lies in quadrant II.
Thank you!
2 answers
asked by
Sara
798 views
Jessica attains a height of 4.7 feet above the launch and landing ramps after 1 second. Her initial velocity is 25 feet per
2 answers
asked by
Jessica
618 views
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