Question

For which value of 0 is 0=-1?
A) pi/2
B)pi
C)3pi/2
D)2pi

Answer 1

The answer is 3pi/2

Explanation:

Dont thank me, thank the other guy they helped me out

Answer 2

`3\pi /2`

Explanation:

The function sin(x) adopts the value -1 for x =
`3\pi /2`.

That is when the segment pictured in red in the attached image is pointing from the center of the circle down. Recall that the sin function gives us the y-readout of the free end of the rotating segment in the unit circle.