Question

What is the value of the y-coordinate of point A?

A.) sin(pi/6)
B.) cos (pi/6)
C.) sin(11pi/6)
D.) cos(11pi/6)
E.) sin(13pi/6)
F.) cos(13pi/6)

Answer 1

C.) sin(11pi/6)

Explanation:

construct triangle with a side perpendicular to x-axis

y=(-1)sin(pi/6)

y=sin(-pi/6)

y=sin((-pi/6)+2pi)

y=sin(11pi/6)