What is cos((npi)/2+pi/2) ?

The solution to cos((npi)/2+pi/2) is -sin((pin)/2)

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simplify cos((npi)/2+pi/2)

simplify

cos (\frac{nπ}{2} + \frac{π}{2})

- sin (\frac{πn}{2})

Solution steps

cos (\frac{nπ}{2} + \frac{π}{2})

Rewrite using trig identities

= - sin (\frac{πn}{2})

\frac{1}{sin ^{2} ( x )} d x

- tan (arctan (x))

a r cos (\frac{- 2}{20})

cos (9 π - a)

tan (\frac{3 π}{2} + α)