Question

cos θ . tan θ is equal to ______.

Options

• cot θ

• sin θ

• cosec θ

• sec θ

Answer 1

cos θ . tan θ is equal to sin θ.

Explanation:

`tan θ = (sin θ)/(cos θ)`.

So, `cos θ · tan θ = cos θ · (sin θ/cos θ)` = sin θ for angles where cos θ ≠ 0, since tan θ is defined then.