Posted by **Angela** on Sunday, July 24, 2011 at 6:39pm.

which of the expressions are identical?

a) cos^2x

b)(cosx)^2

c) cos (x^2)

d) (sinx)^-1

E) sin^-1 x

f) sin (x^-1)

g) 1/ sin x

## Answer this Question

## Related Questions

- pre-cal - Simplify the given expression........? (2sin2x)(cos6x) sin 2x and cos ...
- Math (trigonometric identities) - I was given 21 questions for homework and I ...
- Trigonometry. - ( tanx/1-cotx )+ (cotx/1-tanx)= (1+secxcscx) Good one! ...
- Trigonometry - Prove the following trigonometric identities. please give a ...
- TRIG! - Posted by hayden on Monday, February 23, 2009 at 4:05pm. sin^6 x + cos^6...
- tigonometry - expres the following as sums and differences of sines or cosines ...
- Integral - That's the same as the integral of sin^2 x dx. Use integration by ...
- Mathematics - Trigonometric Identities - Let y represent theta Prove: 1 + 1/tan^...
- algebra - Can someone please help me do this problem? That would be great! ...
- Precalculus/Trig - I can't seem to prove these trig identities and would really ...