Question

Proof: cotx=(sin2x)/(1-cos2x)

Answer 1

Dude, you can Google this.

2sin(x)cos(x)/ (1-cos(2x))

sin(x)cos(x)/ [(1-cos(2x))/2]

sin(x)cos(x)/sin^2(x)

cos(x)/sin(x)

cot(x)


Remember that cos(2x) = cos^2(x) - sin^2(x)

Answer 2

Oh ok thanks

Answer 3

You're welcome, dear :D