How do you estimate an angle to the nearest one-half radian?

Harlen Pritchard

Harlen Pritchard

Answered question

2021-10-22

How do you estimate an angle to the nearest one-half radian?

Answer & Explanation

firmablogF

firmablogF

Skilled2021-10-23Added 92 answers

Start with drawing of trigonometric circle. 
Locate the four main rays of the trigonometric circle.
 angles 0,π2,π,3π2
Also, locate rays that represent angles π4,3π4,5π4,7π4
It is now easy to roughly approximation an angle to the nearest ray if you located these rays π2. For example, if the angle is between rays that represent π4 and π2 we round that angle to π2.

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