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Trigonometric Identities
Page 10
Questions (1,667)
show that
sinx/(1-cotx)+cosx/(1-sinx)=sinx+cosx thanks
1 answer
asked by
rap
291 views
Given that cos z=L where z is an acute angle, find an expression for cot z -cosec z÷sec z +tan z
1 answer
asked by
Salma
440 views
prove that nsini=constant
plz show me solution
3 answers
asked by
dam
418 views
Prove that. √seca+2sina/seca-2sina=Sina+cosa/sina-cosa
3 answers
asked by
Aditya
912 views
if a triangle with sides 12 unit and 5 unit is inscribed in a circle with BC as diameter, then find the value of sin square
3 answers
asked by
neha
460 views
Trig ientities
4 answers
asked by
yaga
331 views
verify this trigonometric identity
cos 'a' - cos 'b' / sin 'a' + sin 'b' + sin 'a' - sin 'b' / cos 'a' + cos 'b' = 0 please help
3 answers
asked by
jessie
511 views
If theta is acute, show that from a diagram, that cot(90-theta) = tan theta and hence simplify tan76°/cot16°
ty
1 answer
asked by
nicholarly
370 views
prove that : cos^3(θ)sin^2(θ)=1/16[2cos(θ)-3cos(θ)-5cos(θ)]
1 answer
asked by
Rabin
432 views
Use identities to simplify each expression.
sin(x)+cos^2(x)/sin(x) = ? tan^3(x)−sec^2(x)tan(x)/cot(−x) = ?
2 answers
asked by
tor
636 views
sin u=1/3 and sin v=1/4.
Then cos u = sqrt(8)/3 cos v = sqrt(15)/4 sin(u+v) = ?
5 answers
asked by
tor
610 views
Prove :Tan20+4sin20=square root 3
2 answers
asked by
Rabin
593 views
prove that secx - tanx = 1 -tan x/2 /1 + tan x/2
1 answer
asked by
kabir
329 views
prove that: sin²(3x) + cos²(3x) + sin²(x) - cos²(x) = 0
6 answers
asked by
yang
1,199 views
Multiply; then use fundamental identities to simplify the expression below and determine which of the following is not
4 answers
asked by
Lottie
666 views
[Note: I'm still having issues with identities with regard to trig]
Verify the Trig. identities: (a).
2 answers
asked by
Amber
521 views
I need to prove this identity:
cot(x)+tan(x)=csc(x)sec(x) I get as adding them together, but then I get stuck.
1 answer
asked by
Jana
432 views
alfa+bita = thita & tan x ratio tan y= x ratio y then prove that sin alfa- bita = x- y ratio x+y sinthita
1 answer
asked by
mehnaj
427 views
Show that (cosð + cosß)² + (sinð + sinß)² = 4cot(ð-ß/2)
4 answers
asked by
sankalp
440 views
SinA + sinB/sinA - sinB= tanA+B/2cotA-B/2
2 answers
asked by
sandy
1,049 views
Verify the identity. Show your work.
cot2x + csc2x = 2csc2x - 1 1+cosec^2x +cosec^2x Cot^2x+cosec^x= 1+2 cosec^2x Would this be
3 answers
asked by
Liz
787 views
Verify that sec(θ)/csc(θ)-cot(θ) - sec(θ)/csc(θ)-cot(θ) = 2csc(θ) is an identity.
can some help me through this? thank
1 answer
asked by
emily
487 views
If sin(theta) = 3/7, what is sin (pi/2 - theta)?
1 answer
asked by
Anonymous
395 views
If cos^4(3x)-sin^4(3x)=cos(g(x)) then
g(x)=? Use a^4-b^4=(a^2-b^2)(a^2+b^2)! thanks in advance for any help!
3 answers
asked by
Giovanni
619 views
tan(theta)/tan(2theta)-tan(theta)= cos(2theta)
1 answer
asked by
aaron
370 views
prove the ff:
a.) sin(x/2) - cos(x/2) = +-sqrt(1 - sin(x)) b.) tan(x/2) + cot(x/2) = 2csc(x) HELP PLEASE!!
1 answer
asked by
Henry Morgan
375 views
How does tan^4x-sec^4x equal -2tan^2x-1
If someone could please explain to me then that would be awesome. Thank you ^^
4 answers
asked by
Ann
394 views
How do I write cos(11x)cos(x)+sin(11x)sin(x) as a single trigonometric function? Please show steps.
2 answers
asked by
Anonymous
649 views
Which expression is equivalent to tan(-x)cos^2x?
-sin xcos x sin xcos x tan x + sin2x tan x − sin2x -tan x − sin2x
3 answers
asked by
jimmy
7,776 views
How do i get left side to equal right side?
(Cos x)/(1+sin x) + (cos x)/(1-sin x) = 2secx
1 answer
asked by
Bobbie
334 views
How do i find the exact value for:
(cos5pi/16)(cospi/16)+ (sin5pi/16)(sinpi/16)
1 answer
asked by
Shelbie
403 views
How do i get the left side to equal the right hand side?
(Cosx)/(1+sinx) + (cosx)/1-sinx = 2secx
1 answer
asked by
Mandy
298 views
How do i get left side to equal right side?
(1-tanx)/(1-cotx) = -tanx
1 answer
asked by
Manuel
407 views
how do i make the left hand side equal right hand side?
(sec^2A)(sin^2A)= (sec^2A-1)
1 answer
asked by
Timm
390 views
Prove left hand side equals right hand side:
(sinx)/(1-cosx)=(1+cosx)/(sinx)
1 answer
asked by
Maxx
418 views
Find the exact value of:
(1-sin^2 pi/2)/(cos^2 28 degrees + sin^2 28 degrees)
3 answers
asked by
Maxx
567 views
I need help with verifying these trig identities:
1) sin4x = 4sinxcos - 8sin^3 x cos x 2) cos3x = cos^3 x - 3sin^2 x cos x
2 answers
asked by
Jane
1,414 views
Verify/prove the following:
(sinA+tanA)/(1+secA) = sinA ______________________________ tanu = 1+sinu-cos^2u/cosu(1+sinu)
2 answers
asked by
Kid
641 views
Verify/prove that:
(cotA+cotB)/(tanA+tanB)+(1-cotAcotB)/(1-tanAtanB) = 0
3 answers
asked by
Kid
864 views
Given sin= -√5/6 with π < u < 3π/2 and cos v= √3/5 with 0 < v < π/2 find sin(u-v) and tan(u+v). Please show work and
1 answer
asked by
Jane
399 views
Find the exact values requested. No decimal approximations.
Given that cot θ = 4 for an acute angle θ, A. Find sinθ. B. Find
2 answers
asked by
jre
1,000 views
verify sinx/secx = 1/tanx+cotx
2 answers
asked by
Anonymous
1,168 views
without usig technology determine is cos135 degres= sin225 degrees
1 answer
asked by
GOD OF GODS
346 views
If TanTheta= -65/72 and the terminal side of theta lies in Quadrant II use a pythagorean identity to find sec theta.
2 answers
asked by
Joe
618 views
if cosx sinx =root2cosx, then prove that cosx-sinx =root2sinx
2 answers
asked by
Ram
699 views
show that Sin5θ/Sinθ = 16Cospower4 θ – 12Cospower2 θ
1 answer
asked by
Crisusseunayo
338 views
Prove:
1) 1 / sec X - tan X = sec X + tan X 2) cot A + tan A = sec A csc A 3)sec A - 1 / sec A + 1 = 1 - cos A / 1 + cos A
4 answers
asked by
Maria Christina
581 views
Given cos 67.5° = [√(2+√2)]/2, find tan 67.5° , simplify where needed, and show work.
I'm starting to learn this stuff, and
3 answers
asked by
Jane
1,077 views
can someone help me prove the identities on this:
1- 1/2 sin2θ = sin^3θ + cos^3θ / sinθ + cosθ
1 answer
asked by
Albert
428 views
sina^2θcos^2θ= 1/8 (1-cos4θ)
1 answer
asked by
Albert
422 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