Question

What is sine in x and y.

Answer 1

Answer:

The value of sin θ is the y-coördinate of the endpoint of the unit radius The value of cos θ is the x-coördinate. With regard to quadrantal angles, the unit circle illustrates the following: If a function exists at a quadrantal angle, it could have only the values 0, 1, or −1. Consider sin θ at each quadrantal angle.