Question

Rewrite the expression 2sin theta (cos theta)(cot theta) in terms of sine or cosine. For this problem, I got started but I don't know what to do next.

Answer 1

D.

Answer 2

\(\large 2sin\theta cos\theta cot\theta = 2sin\theta cos\theta \frac{cos\theta}{sin\theta} \)

Answer 3

I'm trying to figure out how to solve it

Answer 4

cancel the sin(theta)

Answer 5

2cos^2theta

Answer 6

Thank you dplanc, I forgot what cot theta was

Answer 7

yw...:)

Answer 8

So why does sin cancle out instead of cos?