( sec(\theta )+ cos(\theta ) )( sec(\theta )- cos(\theta ) )= tan(^ ( 2) \theta )+ sin(^ ( 2) \theta) ?
1 Answer
Feb 17, 2018
See the answer below...
Explanation:
#(sectheta+costheta)(sectheta-costheta)#
#=sec^2theta-cos^2theta#
#=(1+tan^2theta)-(1-sin^2theta)#
#=1+tan^2theta-1+sin^2theta#
#=tan^2theta+sin^2theta" "# [Proved...]Formula Reference:- click here.
