Precalc Radian measure

Question

Find the radian measure of the angle with the given degree measure. Round your answer to three decimal places.

−160°

Answer 1

-160 x pi/180= - 8pi/9 radians = -0.888...pi radians

= - 0.889pi radians rounded to 3 decimal places

= about -8(3.141593)/9

= about -2.792526 radians

= about -2.793 radians rounded to 3 decimal places

Answer 2

1° = π / 180º radians

-160º = (-160º)(π / 180º) radians