Determine if True cos(pi/4)cos(pi/6)=1/2(cos(pi/12)+cos((5pi)/12))

Math
Simplify .
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Combine the numerators over the common denominator.
Simplify the numerator.
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Add and .
Subtract from .
Add and .
Cancel the common factor of and .
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Factor out of .
Cancel the common factors.
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Factor out of .
Cancel the common factor.
Rewrite the expression.
The left side is equal to the right side , which means that the given statement is always true.
True
Determine if True cos(pi/4)cos(pi/6)=1/2(cos(pi/12)+cos((5pi)/12))

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