Question #c0be0
1 Answer
Dec 4, 2017
Something happening wrong about the question....
Explanation:
#(sec2x)/(sec2x+1)#
#=(1/cos(2x))/(1/cos(2x)+1)#
#=1/(1+cos2x)#
#=1/(1+(cos^2x-sin^2x)#
#=1/((1-sin^2x)+cos^2x#
#=1/(2cos^2x# [#color(red)(1-sin^2x=cos^2x# is the identity]
#=1/2 cdot sec^2x#
#=1/2 cdot (1+tan^2x)#
