What is cos(pi/2+kpi) ?

The solution to cos(pi/2+kpi) is 0

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simplify cos(pi/2+kpi)

simplify

cos (\frac{π}{2} + kπ)

0

Solution steps

cos (\frac{π}{2} + kπ)

Rewrite using trig identities

= - sin (πk)

Use the basic trigonometric identity:

sin (nπ) = 0

= - 0

= 0

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