Question

Describe how you can determine the quadrant in which the terminal side or angle a lies if sin a =-1/4

Answer 1

Step-by-step explanation:

Well it's easy, you can write sin a=y/r

in which y is the y coordinate and r the hipotenuse.

so if sin a is negative that must mean that "a" is where y is negative and that happens in the third and fourth quadrant