Is cos((3pi)/2*123)=cos(pi/2*123) ?

The answer to whether cos((3pi)/2*123)=cos(pi/2*123) is True

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prove cos((3pi)/2123)=cos(pi/2123)

prove

cos (\frac{3 π}{2} \cdot 123) = cos (\frac{π}{2} \cdot 123)

True

Solution steps

cos (\frac{3 π}{2} \cdot 123) = cos (\frac{π}{2} \cdot 123)

Manipulating left side

cos (\frac{3 π}{2} 123)

Simplify

cos (123 \frac{3 π}{2}) : 0

= 0

Manipulating right side

cos (\frac{π}{2} 123)

Simplify

cos (123 \frac{π}{2}) : 0

= 0

We showed that the two sides could take the same form

\Rightarrow True

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Is cos((3pi)/2*123)=cos(pi/2*123) ?
The answer to whether cos((3pi)/2*123)=cos(pi/2*123) is True