Which expression converts 45° to radians?

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Question:

Which expression converts 45° to radians?

a. 45 degrees times.
b. 180 degrees.
c. 180 degrees/pi.
d. pi/180 degrees.

Answer:

The expression that converts 45 degrees to radians is ?f=pi%20%5Cdiv%20180%20degrees.

The following information should be considered:

  • The full circle that contains 360 degrees is 2 pi radians.
  • If we divided it by 2 so it comes 180 degrees.

i.e.

pi radians = 180 degrees

Now divide 180 degrees to both the sides.

So

?f=1%20%3D%20pi%20%5Cdiv%20180%5E%7B%5Ccirc%7D

It does not change the value of the number. It just remains the same.

Therefore, the fourth option is correct.

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