# Grade 11 Trigonometric Identities Question

• March 29th 2009, 09:49 PM
s3a
I don't know how to simplify the following identity (the square root confuses me):

cosec (t) * sqrt(sec^2 (t) - 1)

Any help would be greatly appreciated!
Thanks!
• March 29th 2009, 10:05 PM
Chris L T521
Quote:

Originally Posted by s3a
I don't know how to simplify the following identity (the square root confuses me):

cosec (t) * sqrt(sec^2 (t) - 1)

Any help would be greatly appreciated!
Thanks!

Hint: $\tan^2t+1=\sec^2t$