Prove the following identity:
Follow Math Help Forum on Facebook and Google+
have you attempted anything yourself yet? I would recommended factoring it to start.
The identity will also be useful
The given expression is 1-( Sec2A-Tan2A)2=1-12=0
LHS = 1 - ( sec^4A - 2 sec^2 A tan^2 A + tan^4 A )
= 1 - ( sec ^2 A - tan ^2 A )^2 = 1 - 1 = 0 = RHS
View Tag Cloud