Use the unit circle find the exact value of sin(3/2)π and tan(3/2)π

Question

I need help breaking it down

Answer 1

sin(3pi/2) = sin270 = -1/1 = -1

on a unit circle sine of an angle = opposite side over 1.

tan(3pi/2) is undefined

on a unit circle tangent of an angle = opposite side over adjacent side. tan(3pi/2) = tan270 = -1/0 which is undefined, as you can't divide by 0.