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What is the general formula to convert radians to degrees and vice versa?

Answer 1

James Adkins

see explanation

#color(blue)( " to convert radians to degrees")#

( angle in radians) # xx 180/pi #

example: convert # pi/2 color(black)(" radians to degrees ")#

angle in degrees #= cancel(pi)/2 xx 180/cancel(pi) =180/2 = 90^@#

#color(red)(" to convert degrees to radians") #

(angle in degrees)# xx pi/180 #

For instance, convert 90º to radians.

angle in radians = #cancel (90) xx pi/cancel(180) =pi/2 #

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

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