Posted by Anonymous on .
prove that
1+sin2xcos2x / sin2x+cos2x = tanx

maths 
Reiny,
not true, so it can't be proven the way you typed it
probably needs brackets
counterexample:
let x = 30°
LS = 1 + sin60°  cos60°/sin60° + cos60°
= 1 + √3/2  (1/2) / (√3/2) + 1/2
= 3/2 + √3/2  1/√3
RS = tan 30 = 1/√3 ≠ LS