- - How to prove
(https://www.askmehelpdesk.com/showthread.php?t=654542)
Apr 25, 2012, 11:03 PM
prawn
how to prove
prove : 1/cotA + cosecA = cotA - cosecA
Apr 26, 2012, 06:31 AM
ebaines
Quote:
Originally Posted by prawn
prove : 1/cotA + cosecA = cotA - cosecA
Your formula has an error:
However, the following is true:
To prove it start by replacing the cot(A) and csc(A) functions with their sine and cosine equivalents, then simplify - for example on the left hand side multiply numerator and denominator by sin(A).