Question #93741
1 Answer
Mar 22, 2017
see explanation.
Explanation:
We require to use the following
#color(blue)"trigonometric identities"#
#• sin^2x+cos^2x=1#
#• 1+tan^2x=sec^2x#
#rArr(1+tan^2x)/(sin^2x+cos^2x)#
#=(1+tan^2x)/1#
#=1+tan^2x#
#=sec^2x= "right side " rArr" verified"#
