# Mathematical question? ?

Suppose the function that converts x degrees into f(x) radians is f(x)= pi x/180

1) convert 120pi degrees into equivalent radians and find its smallest positive coterminal angle2) find f^-1(x) and explain what it signifies

### 1 Answer

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- alexLv 72 months ago
y = f(x) = πx/180

1/

f(120) = π*120/180 = 2π/3

2/

to find f^-1(x)

x<--->y

x = πy/180 ---> y=(180/π)x , converts x radian to degrees

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