SOLUTION: Evaluate Arctan (2cos30)

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Question 593967: Evaluate Arctan (2cos30)
Answer by jsmallt9(3758) About Me  (Show Source):
You can put this solution on YOUR website!
Arctan (2cos30)
Since cos(30) = sqrt%283%29%2F2 this becomes:
Arctan+%282%28sqrt%283%29%2F2%29%29
which simplifies to:
Arctan+%28sqrt%283%29%29
This represents the angle between -90 and 90 whose tan is sqrt%283%29. The only angle between -90 and 90 whose tan is sqrt%283%29 is 60.