An angle θ on the unit circle has a sine of 14. What is the value of cosθ?

Given:

An angle θ on the unit circle has a sine of .

To find:

The value of cosθ.

Solution:

We have,

Since sinθ is positive, therefore, θ lies in first or second quadrant.

We know that,

Taking square root on both sides.

Therefore, the value of cosθ is either or .

true? is that what you're asking or do you mean something else?