SOLUTION: Use half-angle formulas to find the exact values. (a) cos 112°30' & (c) tan 5π/12

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Question 927497: Use half-angle formulas to find the exact values.
(a) cos 112°30'
&
(c) tan 5π/12
Answer by lwsshak3(11628) About Me  (Show Source):
You can put this solution on YOUR website!
Use half-angle formulas to find the exact values.
(a)cos 112°30'=cos112.5˚

..
(c) tan 5π/12