What is 3cos(2x+pi/2)-3 ?

The solution to 3cos(2x+pi/2)-3 is -3sin(2x)-3

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simplify 3cos(2x+pi/2)-3

simplify

3 cos (2 x + \frac{π}{2}) - 3

- 3 sin (2 x) - 3

Solution steps

3 cos (2 x + \frac{π}{2}) - 3

Rewrite using trig identities

= 3 (- sin (2 x)) - 3

Remove parentheses:

(- a) = - a

= - 3 sin (2 x) - 3

csc (a - 27 0^{\circ})

- cos (3 0^{\circ} + x)

cot (- 1 (tan (\frac{5 n}{3})))

cot (arccos (\frac{x}{17}))

cos (n π^{1})