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Trigonometric Identities
Page 6
Questions (1,672)
find the exact value of sin(u+v) given that sin u=3/5 and sin v= 15/17
3 answers
asked by
k
2,259 views
find an expression equivalent to sec theta sin theta cot theta csc theta
3 answers
asked by
Anonymous
1,002 views
If A is between 270degrees and 360degrees, and cos A=12/13, find the exact value of:
sin2a, cos2a, sin1/2a, cos1/2a
4 answers
asked by
Bob
1,080 views
if csc theta= -5/3 and theta has its terminal side in quadrant III, find the exact value of tan 2 theta.
3 answers
asked by
hannah
977 views
how do you establish the identity of cos(3pi/2+0)=sin0
4 answers
asked by
rebecca
1,320 views
If sinx=3/4, with x in quadrant II, then determine the value of sin 2x
4 answers
asked by
Lana
979 views
Verify the Identity:
sec(x/2)=the square root of (2 tanx/(tanx sinx))
3 answers
asked by
Tina
477 views
prove:
sin(a+b)/cosacosb=tana+tanb
3 answers
asked by
Sarah Fuller
1,874 views
Prove that (cosy/1+siny) + (1+siny/cosy) = 2secy
3 answers
asked by
Trig
1,410 views
1+(sinA/tanB)^2/1+(sinA/tanC)^2
3 answers
asked anonymously
96 views
prove that cos^2 theta +tan theta cosec theta=cos theta
1 answer
asked by
Blossom
187 views
if cos(x) = 5/13 and sin(y)=3/5 where 0<= x, y <= x/2, determine:
a) cos (x+y) b) sin (x-y)
4 answers
asked by
Raveena
203 views
prove that
sin8x = 8sinx cosx cos2x cos4x
3 answers
asked by
urgent
345 views
If sin theta = 2/7 and theta is in quadrant 2 find cos theta, sec theta, csc theta, tan theta, and cot theta
3 answers
asked by
marcella
833 views
Explain why some trigonometric identities have restrictions or non-permissible
values. What are the restrictions for each of the
4 answers
asked by
dennyelle
603 views
Prove 8sin^5x=sinx(3-4cos(2x)+cos(4x))
4 answers
asked by
Larry Wheels
300 views
4cosasina+cos^2(a)
3 answers
asked by
henk
223 views
Prove this
Cot²(90-theta) /tan² theta-1 + cosec²theta/sec²theta-cosec²theta= 1/sin²theta - cos²theta
3 answers
asked by
Akash
627 views
Find the exact value of cos(u + v) ) given that sin u= 9/41 cos nu=- 15/17 . (Both u and v are in Quadrant II.)
4 answers
asked by
Matt
2,898 views
if COS A=3/5 and Sin B=7/25, when A us acute and B is obtuse, find without using tables. the value of COS(A+B)
4 answers
asked by
JONATHAN
1,685 views
(Sec(theta)*sin(theta))/(tan(theta)+cot(theta))=sin^2(theta)
5 answers
asked by
PLEASE HELP
3,760 views
Prove that. (1+sec2A) (1+sec4A) (1+sec8A)=Tan8A×CotA
3 answers
asked by
Bimal
954 views
Expand cos(50°) using a double angle identity
2 answers
asked by
math
848 views
Prove the identity
cscx+cotx-1/cotx-cscx+1 = 1+cosx/sinx
4 answers
asked by
Anonymous
1,642 views
How do I go about proving that:
cos(4θ) + 4cos(2θ) ≡ 8cos^4(θ) - 3 Thanks in advance!
3 answers
asked by
Autumn
3,425 views
Sec^2(u/2)=(2sec(u))/(sec(u)+1)
3 answers
asked by
Dax
1,225 views
If cosA + sinA= root2 cosA
Show that cosA - sinA= root2 sinA
4 answers
asked by
kumar
1,123 views
Prove
SinA/1-CosA = CosecA + CotA
6 answers
asked by
kumar
2,420 views
cos^3 = (1/2 cosx)(1+cos2x)
Please make the left match the right.
4 answers
asked by
Amy
1,234 views
Prove cos^2 α + cos?^2 β + cos^2 γ = 1 .
Thank You
4 answers
asked by
Angel
446 views
Sin^2x/cosx =tanxsinx
I need help in verifying also please tell me what identity u started with thank you!
3 answers
asked by
Sarah
429 views
If 5cosA+3=0 and 180(degrees)<A<360(degrees)
Determine 1. Tan^2A And 2. SinA over cosA
3 answers
asked by
Kaylee
482 views
secx+tanx/secx- tanx = 1+2sinx+sin^2x/ cos^2x
3 answers
asked by
Madison
2,344 views
Prove that (cos2A)÷ ( 1+sin2A) = (cotA -1) ÷ (cotA +1)
3 answers
asked by
Ismail Abdullah
2,182 views
ifm sin B=nsin(2A+B) prove that(m+n)tanA=(m-n)tan(A+B)
5 answers
asked by
vilas
2,981 views
prove sin(x+y)+sin(x-y)/cos(x+y)+cos(x-y)=tanx
4 answers
asked by
liv
2,811 views
Evaluate sin16° cos29° + cos16° sin29°
4 answers
asked by
Liv
1,363 views
2sin(180°+x)sin(90°+x)/cost^4x-sin^4x
3 answers
asked by
yarku
484 views
If Tan (A+B)=1/3 and Tan(A-B)=2/5,then prove that
A.Tan2A=11/13 B.Tan2B=-1/17
4 answers
asked by
Rabinprakash Dahal
490 views
prove that:
4cosec2ACot2A=cosec^2A - sec^2A
3 answers
asked by
peter
474 views
How do I verify this? Cos^4x-Sin^4x=1-tan^2x/sec^2x
3 answers
asked by
Alli
666 views
Which statement is ALWAYS true?
A) The sine of an angle is equal to the sine of the angle's complement. B) The cosine of an angle
4 answers
asked by
Lauren
3,615 views
solution if x=cosec A + cos A and y=cosec A-cos A then prove that (2/x+y)sqare+(x-y/2)sqare-1=0
3 answers
asked by
Love
626 views
Prove the identity
csc^2x = 2sec2x / sec2x - 1 Sorry i really tried. I got : LS = 1 - (cos^2x/sin^2x) but that's it. please help
3 answers
asked by
Nihira
503 views
Prove that cosec 60 degrees cot 30 degrees tan 60 degrees=2secsquared 45degrees cos 30 degree
4 answers
asked by
Haiano
2,288 views
tan^2(5x)cos^4(5x) = 1/8 - 1/8cos(20x)
3 answers
asked by
Peggy
599 views
Sin3x=3cos^2xsinx-sin^3x
4 answers
asked by
Noemi
1,219 views
prove that:
sinC+sinD =2sin((C+D)/2)*cos((C-D)/2)
2 answers
asked by
celina
811 views
use basic identities to simplify the expression.
csc θ cot θ / sec θ
3 answers
asked by
tony
660 views
Verify
Sinx-sinxcos^2x =sin^3x Need every step!!!
3 answers
asked by
Kristen
1,971 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