Degree and Radian Measures

Convert the angle to radians. Leave as a multiple of /pi
-630°

a. -7/pi
b. - 7/pi/4
c. - 7/pi/2
d. 7/pi/2

Please select from the best choices provided

Answer :

Answer:

C. -7/pi/2

Step-by-step explanation:

I calculated it logically

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