How do you prove (cosx)(cscx)(tanx)=1?

1 Answer
May 15, 2016

(cosx)(cscx)(tanx)=1

(cosx)(1/sinx)(sinx/cosx)=1

I multiply cosx by (sinx/sinx)

(cossinx/sinx)(1/sinx)(sinx/cosx)=1

cosx/cosx=1

Explanation:

I use
http://www.regentsprep.org/regents/math/algtrig/ATT9/morepythag.htm
to assist me in proving trigonometric identities and equations.
In the end, you have to play around with it.