Posted by Emily on Monday, April 2, 2012 at 3:57pm.
cos(sin^1 x)=sq rt(1x^2)
prove the identity

trig  Steve, Monday, April 2, 2012 at 4:18pm
draw a triangle with opposite leg=x, hypotenuse=1
adjacent leg = √(1x^2)
however, doing it algebraically,
let θ=sin^1 x
x = sinθ
cos^2 θ + sin^2 θ = 1
cos^2 θ + x^2 = 1
cos^2 θ = 1  x^2
cosθ = √(1x^2)
Answer This Question
Related Questions
 TRIG!  Posted by hayden on Monday, February 23, 2009 at 4:05pm. sin^6 x + cos^6...
 Trigonometry  Prove the identity sin(x+y+z)+sin(x+yz)+sin(xy+z)+ sin(xyz...
 MathsSs triG  Consider sin(x360)sin(90x)tan(x)/cos(90+x) 1.A.SIMPLIFY sin(x...
 Trigonometry desperate help, clueless girl here  2. solve cos 2x3sin x cos 2x=...
 Advanced Functions/Trig  Prove the identity: cos^4 x + sin^4 x = 1  (1/2)sin^2...
 trig  it says to verify the following identity, working only on one side: cotx+...
 Trigonometry  1.Solve tan^2x + tan x – 1 = 0 for the principal value(s) to two ...
 trig  Prove the identity sin (3 pi/2 + x) + sin (3 pi/2 x) = 2 cos x
 MATH  Hi, I really need help with these questions. I did some of them halfway, ...
 Mathematics  Trigonometric Identities  Let y represent theta Prove: 1 + 1/tan^...
More Related Questions