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How do you express $cos (\frac{π}{2}) \cdot cos (\frac{π}{12})$ $cos(pi/ 2 ) * cos (( pi) / 12 )$ without using products of trigonometric functions?

1 Answer

Feb 1, 2016

0

Explanation:

Because $cos (\frac{π}{2}) = 0$ $cos(pi/2)=0$

:D

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