# Trig identities.

• November 13th 2011, 10:50 AM
clemski
Trig identities.
show that two waveforms represented by V1 = sec(SQUARED) + cosec(SQUARED) and V2 = sec(SQUARED)x.cosec(SQUARED) are interchangeable.
• November 13th 2011, 11:00 AM
Siron
Use the fact that $\sec^2(x)=\frac{1}{\cos^2(x)}$ and $\csc^2(x)=\frac{1}{\sin^2(x)}$
• November 13th 2011, 11:09 AM
clemski
youre the best siron,,but how do i write it?
• November 13th 2011, 11:11 AM
mr fantastic
Quote:

Originally Posted by clemski
youre the best siron,,but how do i write it?

You're meant to make the suggested substitutions and then make an effort. Where do you get stuck?
• November 13th 2011, 11:18 AM
clemski
Re: Trig identities.
sorry like,,but tbh i dont know how to edit cosec into the calc for a start!
• November 13th 2011, 11:34 AM
mr fantastic
Re: Trig identities.
Quote:

Originally Posted by clemski
sorry like,,but tbh i dont know how to edit cosec into the calc for a start!

Then I suggest the old-fashioned approach - Apply what you have learned and do it by hand using algebra. Show all your work, say where you get stuck.