Posted by **Jake** on Wednesday, January 25, 2012 at 6:58pm.

What is the first step. Explain please.

Which expression is equivalent to cos^2x + cot^2x + sin2^x?

a) 2csc^2x

b) tan^2x

c) cot^2x

d) csc^2x

cos^2x + cot^2x + sin2^x

- Math -
**Damon**, Wednesday, January 25, 2012 at 7:37pm
1 + cot^2 x

1 + cos^2 x/sin^2 x

sin^2 x/sin^2 x + cos^2 x/sin^2 x

1/sin^2 x

csc^2 x d)

- Math -
**Jake**, Wednesday, January 25, 2012 at 8:08pm
How did you get 1 + cot^2 x?

- Math -
**Damon**, Wednesday, January 25, 2012 at 9:31pm
cos^2 x + sin^2 x = 1

That should be part of your soul !

- Math -
**Jake**, Wednesday, January 25, 2012 at 10:03pm
Thank you~ T.T my school is fast paced, I am trying to keep up...

## Answer this Question

## Related Questions

- trig - For each expression in column I, choose the expression from column II to ...
- Trigonometry - Please review and tell me if i did something wrong. Find the ...
- trigonometry repost - Reduce (csc^2 x - sec^2 X) to an expression containing ...
- Math - Trig - I'm trying to verify these trigonometric identities. 1. 1 / [sec(x...
- Pre-Calculus - I don't understand,please be clear! Prove that each equation is ...
- Trigonometry - Hello all, In our math class, we are practicing the trigonometric...
- math - how do I simplify these? 1. (Cot/1-tan) + (Tan/1-Cot) - Tan - Cot 2. (1+...
- Math - Which of the following are inverse functions? 1. Arcsin x and sin x 2. ...
- math (repost) - Which of the following are inverse functions? 1. Arcsin x and ...
- Math - 1)Find cos theta if sin theta=3/5 and 90 degrees<theta<180 degrees...

More Related Questions