# Can we prove this is an identity? Sin(x) Cot(x)=Cos(x)

##### 2 Answers

Mar 31, 2018

Yes. See below.

#### Explanation:

It's best to get this in a form involving only sine and cosine.

Recall that

So, yes, it is an identity.

Mar 31, 2018

Please see below.

#### Explanation:

.

Let's plug it in: