Question

sin^2x/1-cosx=1+cosx
Trig identity proofs

Answer 1

sin^2x = 1-cos^2x

Answer 2

L =sin^2x / 1-cosx P=1+cosx
L= 1-cos^2x/1-cosx = (1-cosx)(1+cosx)/1-cosx = 1+cosx =p
L=P

Answer 3

1-cos^2x is the the difference of squares (1-cosx)(1+cosx)

Answer 4

1-cosx will cancel leaving 1+cosx=1+cosx