SOLUTION: Evaluate cos-1(square root 2over 2) in both radians and degrees if it exists.
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Question 191882This question is from textbook saxon algebra.com
: Evaluate cos-1(square root 2over 2) in both radians and degrees if it exists.
This question is from textbook saxon algebra.com
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
If you look at the unit circle:
You'll see that at the point on the circle that has the x-coordinate (in the first quadrant), the angle is or 45 degrees.
So this means that =\frac{\pi}{4})
(in radians) or =45)
(in degrees)
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