2tanx/1-tan^2x??
1 Answer
Apr 28, 2018
Explanation:
#"using the "color(blue)"addition formula for tan"#
#•color(white)(x)tan2x=(2tanx)/(1-tan^2x)#
#"the expression you have is the right side of the expansion"#
#rArr(2tanx)/(1-tan^2x)=tan2x#
