Question

Convert the degree measure to radians. Give your answer as a rational number multiplied by π.
a. 120º b. 36º

Answer 1

hint 360 degrees=2pi radians

Answer 2

You can do it like this.
\[\frac{120º}{x} = \frac{180}{ \pi}\]
Then solve x
\[x = \frac{120º \pi }{ 180º} = \frac{2 \pi }{ 3}\]
Now, can you try (b)?
Replace 120º by 36º and solve x. Then you would find the answer.