Question

Simplify the trigonometric expression? sin^2 θ/ (1 - cos θ)

Answer 1

sin^2 θ = 1 - cos^2 θ

Answer 2

the use the difference square formula :
a^2 - b^2 = (a+b)(a-b)

so,
sin^2 θ/ (1 - cos θ) = (1 - cos^2 θ)/ (1 - cos θ)
= (1 + cos θ) (1 - cos θ)/ (1 - cos θ)
cancel out the same term, and get ur answer

Answer 3

* then

Answer 4

thank you very much! :)

Answer 5

wlcm