# Trigonometric Identities

• Nov 21st 2006, 01:42 PM
asiankatt
Trigonometric Identities
Hi there .

I'm not sure on how to do this question so I wondering if I could get some help . I'd greatly appreciate it :

Create a trigonometric identity that requires at least 3 steps in the solution to prove it is an identity. The identity must also include cosecant, secant or cotangent. Provide solution .

HUGE Thank you in advance .
• Nov 21st 2006, 02:14 PM
Jameson
This isn't as hard as it sounds.

Take something simple like $\sec(x)$

Well $\sec(x)=\frac{1}{\cos(x)}$

And $\sin^2(x)+\cos^2(x)=1$, so $\sec(x)=\frac{1}{\sin^2(x)\cos(x)+\cos^3(x)}$

Take it one more step. :)