SOLUTION: How do i find the value of the expression (if there's any) of Cos-1 0
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Question 653374: How do i find the value of the expression (if there's any) of Cos-1 0
Answer by solver91311(24713) (Show Source): You can put this solution on YOUR website!
)
means "The angle whose cosine is zero".
Use the unit circle to find all angles for which the cosine is zero. Hint: The cosine of an angle is equal to the 
-coordinate of the point where the terminal ray of the angle intersects the unit circle.
Note: Unless you specify a more restricted range for your inverse cosine function, any angle 
is equivalent to 
John
My calculator said it, I believe it, that settles it
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