# What is the value of #sin -1 (cos x)#?

##### 1 Answer

Oct 2, 2015

#### Explanation:

Assuming you mistyped and meant

We know that the cosine function, is nothing more than the sine

So we can say that the sine function, 90 degrees ahead, is the cosine function.

Using the property of inverse functions that

If you must use degrees, just convert those