Question

Which of the following is coterminal to 500 degrees in radians?

5pi/6
8pi/9
2pi/3
7pi/9

Answer 1

7pi/9

Explanation:

subtract 360 from 500 as many times as you can

number left should be converted to radians

500 - 360 = 140

140 * (pi/180) =

140Pi/180 =

simplify by dividing by 20 top & bottom

7Pi/9

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