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Trigonometric Identities
Page 4
Questions (1,668)
2 cosy+siny =?
4 answers
asked by
Mahek
1,092 views
Simplify and write the trigonometric expression in terms of sine and cosine:
tan^2 x-sec^2 x=
4 answers
asked by
pika
2,632 views
Prove that (1+tan21) (1+tan28) (1+tan24) (1+tan17) = 4
4 answers
asked by
Suresh
4,741 views
Find sin(2x), cos(2x), and tan(2x) from the given information.
sin(x) = 5/13, x in Quadrant I sin(2x)? cos(2x)? tan(2x)? I
5 answers
asked by
Armani
4,081 views
prove 2csc(2x)= csc(x)^2tanx
4 answers
asked by
Kyler
1,658 views
Which expression equivalent to: cos(theta + pi/2).
A)cos theta B)-cos theta C)sin theta D)-sin theta my book doesnt give examples
4 answers
asked by
Jon
1,912 views
given that cos 5pi/9 = sin y first express 5pi/9 as a sum of pi/2 and a angle and then apply a confunction identity to determine
4 answers
asked by
Anonymous
1,305 views
If is a n acute angle and tanx=3 4 evaluate cosx-sinx cosx+sinx
9 answers
asked by
Anonymous
3,352 views
Suppose that sin(t) = x/(x + 3)
Use this information and a reference triangle to eliminate the trigonometric function from the
4 answers
asked by
Calie
878 views
find the algebraic expression that is equal to sin (-theta) sec(-theta) cot(-theta)
4 answers
asked by
Amanda
604 views
Show that
sinx = (square root of) 1 - cos^2x is not an identity
4 answers
asked by
Anonymous
1,655 views
prove that cot x tan 2x-1 =sec 2x
3 answers
asked by
lia
3,041 views
Cos^2A/sinA-cosecA+sinA=0
Prove lHS =RHS
4 answers
asked by
Sneha
1,412 views
Tan theta over 1 + sec theta + 1 +sec theta over Tan theta= 2 csc theta
4 answers
asked by
Kevin
1,389 views
Let sin u=-8/17 and cos v= 12/13, with pie<u<3pie/2. Find the exact value of cos(u+v)
4 answers
asked by
Lizzy
3,593 views
if tan theta = 1/7 and tan phi= 1/3 then prove that cos 2 theta= sin 4 phi
4 answers
asked by
ipshita
5,017 views
Simplify by referring to the appropriate triangle or trigonometric identity:
cos(arctan(x))
4 answers
asked by
terra
1,225 views
if sin θ = -7/13 and cos θ= 12/13, find tan θ and cot θ using Quotient Identities.
4 answers
asked by
matt
1,099 views
Use the appropriate reciprocal identity to find the approximate value of sin θ for the given value of csc θ. Use a calculator.
3 answers
asked by
Dave
4,120 views
Prove sin^2(x)-cos^2(y)/Sinx cosx-Sinycosy=TAN(x+y)
3 answers
asked by
Rabinprakash Dahal
898 views
cos[(tan^-1(3/4))+(cos^-1(9/41))]
3 answers
asked by
Hannah
986 views
prove(sinx/cosx+1)+(cosx-1/sinx)=0
Please help asap!!!!! PLEASE
4 answers
asked by
Katie
3,150 views
what is the answer to cot^2X+5=csc^2X+4?? i am not sure where to begin
4 answers
asked by
deborah
388 views
if x=4 tan theta, express cos(2 theta) as a function of x
4 answers
asked by
Lisa
1,989 views
If tan(A+B) = 2 and tan B =1/3, find tan A
4 answers
asked by
Rick
650 views
Verify the identity. Justify each step. tan (thetA) + cot (thetA) = 1 / sin (thetA) cos (thetA)
3 answers
asked by
Chris
1,669 views
ifcosX+cosY=a and sinX+sinY=b than prove thatsin2X+sin2Y=2ab(1-2/(a^2+b^2)
6 answers
asked by
Binoy kumar mahato
4,291 views
Show that cos^2(theta)+tan(theta)cosec(theta)=cos???
Show work
3 answers
asked by
Collins
559 views
Express tan(t) in terms of cos(t), where t is in Quadrant 3
3 answers
asked by
Fortuna
2,218 views
Find the exact value of tan(a-b)
sin a = 4/5, -3pi/2<a<-pi; tan b = -sqrt2, pi/2<b<pi identity used is: tan(a-b)=(tan a-tan
5 answers
asked by
Dee
1,229 views
The expression 4 sin x cos x is equivalent to which of the following?
(Note: sin (x+y) = sin x cos y + cos x sin y) F. 2 sin 2x
3 answers
asked by
B.S.
1,993 views
Assume that A and B are in standard position and that sin A = 1/2, cos A >0, tan B = 3/4, and sinB<0
Cos (A-B)
3 answers
asked by
Anonymous
905 views
If sin = 4/5 with A in QII, and sin B = -3/5 with B in QIV find cos(A-B)
4 answers
asked by
rick
1,760 views
Given that cosA=4/5 and sinB=15/17 where A and B are acute angles,find the value of cos(A-B)
4 answers
asked by
Kealeboga
1,437 views
Find the exact value of cos(2θ)and sin(2θ) if tan(θ) = (-5/12) and 270° < θ < 360
4 answers
asked by
rainbow
1,009 views
What is the difference between Cos(1/2)= and arcCos(1/2)=, why are they both equal to pi/3
4 answers
asked by
Anonymus
1,423 views
Given that tan xº = 3/7 ,find cos (90 - x)º giving the answer to 4 significant figures.
5 answers
asked by
King
1,291 views
sin2x = cos(3x -10), find tanx
5 answers
asked by
kd
1,936 views
Evaluate by using the Pythagorean identities
Find sin θ and cos θ if tan θ=1/6 and sin θ >0
3 answers
asked by
Bill
849 views
if sin23=p,write down the following in terms of P
*cos113 *cos23 *sin46 so i draw the diagram an solve for x in terms of P an got
3 answers
asked by
onika
1,308 views
Verify the identity .
cot ( theta - pi / 2 )= - tan theta
3 answers
asked by
Ciaria
497 views
Given sin x = 5/13 and 0 < x < pi/2 find the value of sin(π − x).
12/13 5/13 -12/13 -5/13
3 answers
asked by
Kiki
909 views
Show that cos (θ-40) = sin (θ+50). Hence, or otherwise, solve the equation cos(θ-40) = sin(θ+50), giving all solutions
4 answers
asked by
WesleyCrusher
2,507 views
Verify the Identity:
sin(x+π)/cos(x+3π/2) =tan^2x-sec^2x I've done: sinxcosπ+cosxsinπ / cosxcos(3π/2) - sinxsin(3π/2)
4 answers
asked by
Phil-- HELP NEEDED ASAP
759 views
sin a=3/5, a lies on quadrant 1 and sin b=5/13, b lies on quadrant 2. Find cos(a+b)
3 answers
asked by
i need help
3,139 views
Prove that
sin²A-sin²B/sinAcosA-sinBcosB = tan(A+B)
3 answers
asked by
Kewal
622 views
tan x = n tan y, sin x = m sin y then prove that m^2-/n^2-1 = cos^2x
4 answers
asked by
samuel r. edward
2,692 views
Given that tan B= 7/24 with B in quadrant III, find sin 2B, cos 2B, and tan 2B, using angle identities.
3 answers
asked by
Ryan
3,049 views
Given that sin theta= 3/5 and the terminal side is in quadrant II, find tan (pi/2 - theta)
3 answers
asked by
Ryan
1,413 views
Which of the following are trigonometric identities, I have narrowed it down to two -
(cscx + cotx)^2 = 1 OR sin^2(x)sec^2(x) + 1
3 answers
asked by
Veronica
803 views
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Parent Categories (14)
Algebra
Algebraic Simplification
Basic Trigonometric Functions
Calculus
Cosine and Sine
Functions
Functions and Formulas
Mathematics
Simplifying expressions
Tangent
Tangent Function
Trigonometric Equations
Trigonometric Functions
Trigonometry