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How do you sketch the angle #(5pi)/4# and find its reference angle?

1 Answer

Apr 24, 2018

enter image source here
The reference angle is #45^o#

Explanation:

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On the unit circle every #45^o# is equal to #pi/4#
So #(5pi)/4# is equal to #225^o#

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However the reference angle is always taken from degree from the #x# axis
This makes the reference angle #45^o#

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