# Thread: Need help solving trig Identity

1. ## Need help solving trig Identity

Hi I am having trouble with these Trig questions:

1) (tanx)(csc^2x)/Sec^2x
2) (cotx)(sec^2x)/csc^2x

If anyone could help that would be great!

2. ## Re: Need help solving trig Identity

Originally Posted by Gurp925
Hi I am having trouble with these Trig questions:

1) (tanx)(csc^2x)/Sec^2x
2) (cotx)(sec^2x)/csc^2x

If anyone could help that would be great!
By identity I presume you mean simplify? The easiest way to do this is to write everything in terms of sines and cosines. For example

$\displaystyle \tan(x)\cdot \csc^2(x) \cdot \frac{1}{\sec^2(x)}=\frac{\sin(x)}{\cos(x)}\cdot \frac{1}{\sin^2(x)}\cdot \frac{\cos^2(x)}{1}$

3. ## Re: Need help solving trig Identity

Originally Posted by Gurp925
Hi I am having trouble with these Trig questions:

1) (tanx)(csc^2x)/Sec^2x
2) (cotx)(sec^2x)/csc^2x

If anyone could help that would be great!
Neither of these is an identity, or even an equality...

4. ## Re: Need help solving trig Identity

MY mistake everyone with my wording the unit is trig identities and equations the question is asking us to simplify by writing as a single trig ratio.

5. ## Re: Need help solving trig Identity

Originally Posted by Gurp925
MY mistake everyone with my wording the unit is trig identities and equations the question is asking us to simplify by writing as a single trig ratio.
In which case refer to my previous post.