Question

Simplify the trigonometric expression sin^2 theta/1-cos theta

Answer 1

need help

Answer 2

Sin^2(theta) + Cos^2(theta) = 1
What does Sin^2(theta) equal to from that equation?

Answer 3

1/csc^2 theta ???

Answer 4

Well Sin^2(theta) = 1 - Cos^2(theta)
If you plug that in,
[ 1 - Cos^2(theta) ]/[1 - Cos(theta)]
Use the formula for the difference of squares on top:
(1-Cos(theta))*(1+Cos(theta))/(1-Cos(theta))

Answer 5

Cancel out 1-Cos(theta) and that will be your answer.

Answer 6

dude full gratitude!

Answer 7

You're welcome