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Solving Trigonometric Equations
Page 5
Questions (282)
tanx+secx=2cosx
(sinx/cosx)+ (1/cosx)=2cosx (sinx+1)/cosx =2cosx multiplying both sides by cosx sinx + 1 =2cos^2x sinx+1 =
1 answer
asked by
shan
864 views
how can i find a general solution of g(x)when they give me g(X) =cos (x+30)and g(X)= -2sinx
2 answers
asked by
mazandie Magaduzela
805 views
How do I solve Cos(theta)= 3/7 if 0 degrees is less than or equal to theta and theta is less than or equal to 90 degrees?
2 answers
asked by
john
826 views
Given that csc θ = -4 and tan θ > 0, find the exact value of
a. x b. sin θ c. cos θ d. r e. sec θ f. cot θ
2 answers
asked by
Paula
536 views
Hi, can someone give me the answer to this question:
secA-tanA=1/4. Find cosA I got: CosA=4(1-sinA) Is my answer good? Now
3 answers
asked by
Shym
808 views
Find all values of x in the interval [0, 2 pi] that satisfy 2 cos x-1 = 0.
cos x = 1/2 x = 60 How do I find the other value of x?
2 answers
asked by
Raj
757 views
Solve the equations below exactly. Give your answers in radians, and find all possible values for t in the interval 0≤t≤2π.
2 answers
asked by
Rileigh
765 views
Use a graphing utility to approximate the solutions (to three decimal places) of the given equation in the interval square
2 answers
asked by
megan
735 views
Solve cos(5x-10°)=sin(20-3x) pls help me and pls show the working
2 answers
asked by
Anonymous
719 views
Okay so I have a question on my assignment that says:
You are given that tan(y) = x. Find sin(y)^2. Express your answer in terms
1 answer
asked by
Tracy
687 views
How do you find the exact value of:
4sin 60degrees - 3tan 135degrees
2 answers
asked by
Megan
667 views
Find all the angles θ in the interval [-2pi, 2pi] for which cos(3θ) = 1/sqrt(2)
I'm not sure why I would have to look for
5 answers
asked by
Anonymous
641 views
Directions: Find the Location on Unit Circle, Period & General Solution for this problem>>>>>>> sin^2x=3cos^2x
What I have so
2 answers
asked by
Rachel
648 views
Given: sec θ = –6.4, 0˚ θ 360˚ , solve for θ.
1 answer
asked by
dave
611 views
solve sin(theta)=-1 for all real values of (theta)
I don't understand but by following the example in my book; sec(theta)=-1 from
4 answers
asked by
House
616 views
Solve sin θ = 0.95 for -90º ≤ θ ≤ 90º. Round to the nearest tenth.
3 answers
asked by
Quinn
607 views
Find all solutions for the following equation in the interval
0 ≤ x <2pi 3cos(3x)=6 i got cos3x=2, don't know how to go further
6 answers
asked by
richard
599 views
Can someone explain to me this :
-sinx=cosx X=3pi/4 and 7pi/4
2 answers
asked by
Idontknow
611 views
Okay, I have been given a trigonometric equation to solve (sin^2(theta) + cos(theta) = 2). So far, I have been able to use the
2 answers
asked by
Veronica
603 views
How would you graph sin 4x = 1 ?
a) How do you find amplitude? b) How do you find Period? I'm kind of confused about the "=1"
3 answers
asked by
Allessandra
597 views
give that sin( A + B )= 2cos(A - B ) and tan A = 1/3,Find the exact value of tanB
4 answers
asked by
CHRYSTABELLE
603 views
hey, i would really appreciate some help solving for x when:
sin2x=cosx Use the identity sin 2A = 2sinAcosA so: sin 2x = cos x
2 answers
asked by
elle
606 views
theta is an angle in standard position with a domain of 0 degrees < theta < 350 degrees and cot theta = -(24)/(7). Find all
2 answers
asked by
Tricia
581 views
Theta = x
Question: Given angle x, where 0degrees <= x <= 360 degrees, solve for x to the nearest degree. b) sin(x + 20degrees) =
2 answers
asked by
Kwame
566 views
Solve tan2A - 2tanA = -1 for 0º≤A≤360º.
2 answers
asked by
TeeKay
578 views
Find all solutions between 0 and 2pi to tan(x)=-Squareroot3 exactly.
2 answers
asked by
Sarah
571 views
how do I find theta in
tan(theta)=0.67
2 answers
asked by
Anonymous
529 views
Solve the following equations for 0 < x < 2pi
A) sin^2x=2sinxcosx B) 3tanx=cosx Please help Thankyou
3 answers
asked by
Anonymous
575 views
Solve each equation for 0<_ 0<_ 2pi(3.14)
A) 2cos^20 - sin0 -1=0 My answers: sin0= -1/2 or sin0=1 so 0 = 7pi/6, 11pi/6 and pi/2
2 answers
asked by
Milly
554 views
Solve. Give the answers in degrees so that 0° ≤ θ < 360°.
1) (5 cos θ - 1) / 2 = 1 answers: 53°, 127°, 233° 2) 3 cot
4 answers
asked by
owen
533 views
How would you solve:
5 cos x + 2 = 0 In the domain of 0 degrees to 360 degrees
4 answers
asked by
Paris
524 views
if cos x= 2/5, what is the measure of less than x, to the nearest degree?
2 answers
asked by
shannon
502 views
ok so I'm learning to solve problems like
cos(x)=2 and sin(x)=5 I've wrapped my head around the process required to do so and I
4 answers
asked by
George
543 views
Solve (sinx-1)(cosx -1/2) = 0 where 0≤x<2pi
a) pi/3, pi/2, 5pi/3 b) pi/6, 5pi/6, pi c) pi/3, pi, 5pi/3 d) pi/6, pi/2, 5pi/6
2 answers
asked by
Jake
553 views
sin (4x) = .5 what are the 4 solutions? How did you get them?
4 answers
asked by
bob
535 views
I need help solving for all solutions for this problem:
cos 2x+ sin x= 0 I substituted cos 2x for cos^2x-sin^2x So it became
2 answers
asked by
Martha
553 views
Solve:
3csc^2x - 5cscx - 2 = 0 sec^2x + 5secx + 6 = 0 interval : [0, 2pi]
2 answers
asked by
Anonymous
535 views
i don't know how to work these problems out so i'll just pick a random one out from my home work and if someone could explain it
1 answer
asked by
Kathryn
521 views
Which of the following is not a value of θ when sin θ=−1 ?(1 point) Responses −π2 negative Start Fraction pi over 2 End
1 answer
asked anonymously
22 views
What point on the x-y plane does theta = 0 describe?
I tried doing: tan(theta) = y/x tan(0rad) = y/x 0 = y/x So y is definitely
2 answers
asked by
Kid
495 views
Given that sin x =0.5 find the values of x between 90degrees and 360degrees?
2 answers
asked by
Sannu Xeno
452 views
hi im back..
solve cosx= (squareroot3)/ 2 where 0 <(with a line underneath) x <(with a line underneath) 2 pie a) how many
1 answer
asked by
Maria
463 views
Find two values of 0, 0 ≤ 0 ≤ 2π that satisfy the following equation. Show your work.
sin 0 = 1/2
1 answer
asked anonymously
32 views
how would you find the angle to (3)^.5sin(2x)-2cos(2x)+2sin^2(x)=1
I know that you have to use the trig identities but then when
1 answer
asked by
mike
476 views
How are these solved?
1. cosx+1=0; x ∈ R 2. 4sin^2 x - 1 = 0; x ∈ R 3. 2cos^2 x + 3cosx + 1 =0;0 ≤ x < 2π
1 answer
asked by
Anonymous
458 views
Find two solutions of the following equations, giving your answers in radians
sin ϴ = 1/2 cosec ϴ = 2sqrt(3)/3 cot ϴ = -1
3 answers
asked by
NR
457 views
cos(x)=2
and sin(x)=5 Thanks for your previous answers mathmate. No. It's not a typo. I was wondering if someone could explain to
1 answer
asked by
George
465 views
solve: sec x-2^.5=0
1 answer
asked by
Anonymous
439 views
can some one help me here : if 5 cos x + 3 = 0 and 180 degrees < x < 306 degrees , find the value of 3 tan x + 25 sin^2 x
1 answer
asked by
nokuphiwa
440 views
Give that x is angle in the first quadrant such that 8sin 2x + 2cosx – 5 = 0
Find: cosx tanx
1 answer
asked by
kudu
443 views
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Parent Categories (18)
Equations
Equations and identities
Equations and Relationships
Equations involving trigonometric functions
Exact values of trigonometric functions
Finding angles
Functions and Equations
Right Triangle Trigonometry
Right triangles
Sin and Cos Functions
Standard Position Angles
Trigonometric Equations
Trigonometric Equations and Identities
Trigonometric Functions
Trigonometric functions and identities
Trigonometric Identities
Trigonometric Ratios
Trigonometry