Given that cosx=p find an expression, in terms of p, for tan2x?
2 Answers
Oct 12, 2015
Explanation:
If cos x =p,
tan x =
Oct 12, 2015
Explanation:
If
cos2x=p2 .
By Pythagoras,
sin2x=1−cos2x=1−p2
Now
tan2x=sin2xcos2x=1−p2p2=1p2−1