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# Proving trig identity C3 Watch

1. Sec(theta) + cosec(theta)cot(theta)= sec(theta)cosec^2(theta).

How do u prove this identity.
Sec(theta) + cosec(theta)cot(theta)= sec(theta)cosec^2(theta).

How do u prove this identity.
Start from one side, the LHS looks easier and to get your started, let's convert everything into sines and cosines:

What does the numerator look like now? Perhaps a nice Pythagorean identity might help? Then convert everything back into sec's and cosecs.
3. (Original post by Zacken)
Start from one side, the LHS looks easier and to get your started, let's convert everything into sines and cosines:

What does the numerator look like now? Perhaps a nice Pythagorean identity might help? Then convert everything back into sec's and cosecs.
Ohh i think i get it thankss
Ohh i think i get it thankss
No worries.

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Updated: April 12, 2016
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