Find the reference number and the terminal point determined by t.

Question

a. t = - 7(pi)/6

Answer 1

t = -7(pi)/6.
-7(pi)/6 * 180/(pi) = -210 deg.
-210 is 210 deg CW from the + x-axis
and is in the 2nd quadrant.

Ar = [-210] - 180,
Ar = 210 - 180 = 30 deg.

A = 180 - 30 = 150 DEG CW FROM +X AXIS.