Trigonometric functions of any angle Find the angle theta de

Trigonometric functions of any angle Find the angle theta degree and Q\' in standard position. theta = 160 degree theta = -125 degree theta = 2 pi/3 theta = 4.8

Solution

45 ) theta = 160 degrees

reference angle = 180 - 160 = 20 degrees ( in 2nd quadrant )

46 ) theta = - 125 degrees

reference angle = 180 - 125 = 55 degrees ( in 3rd quadrant )

49) theta = 2pi/3

reference angle = pi - 2pi/3 = pi/3 ( in 2nd quadrant )