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

The solution to 3cos(x+(2pi)/3) is 3(-1/2 cos(x)-(sqrt(3))/2 sin(x))

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

simplify

3 cos (x + \frac{2 π}{3})

3 (- \frac{1}{2} cos (x) - \frac{3}{2} sin (x))

Solution steps

3 cos (x + \frac{2 π}{3})

Rewrite using trig identities

= 3 (- \frac{1}{2} cos (x) - \frac{3}{2} sin (x))

csc (arccos (1 + 3 x))

- 4 π sin (10 π t - \frac{π}{3})

15 - 13 cos (10 x + π)

cos (x - \frac{5 π}{4})

sin^{2} (θ) - 1 + 2 cos (θ) sin (θ)

What is 3cos(x+(2pi)/3) ?
The solution to 3cos(x+(2pi)/3) is 3(-1/2 cos(x)-(sqrt(3))/2 sin(x))