SOLUTION: Assuming an angle in Quadrant I, find the exact value of cos(cot^-1(12/5)). Thanks

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Question 972524: Assuming an angle in Quadrant I, find the exact value of cos(cot^-1(12/5)). Thanks
Answer by lwsshak3(11628) About Me  (Show Source):
You can put this solution on YOUR website!
Assuming an angle in Quadrant I, find the exact value of
cos(cot^-1(12/5)).
Problem is to find the cos of an angle (x) whose cot is (12/5)
That is, cotx=12/5 (working with a (5-12-13) reference right triangle in quadrant I)
cos(cot^-1(12/5))= cos x=12/13