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...

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