Question

if tan theeta+sec theeta= l then prove that sec theeta =lsq +lby 2 l

Answer 1

sec^2t - tan^2t= 1

(sect-tant)(sect + tant)=1

(set-tant)(1)=1

sect-tant =1 and sect +tant =1

add both the equation

2sect = 2 so. sect =1 and tant =0