What is cos(θ-240) ?

The solution to cos(θ-240) is -1/2 cos(θ)-(sqrt(3))/2 sin(θ)

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simplify cos(θ-240)

simplify

cos (θ - 24 0^{\circ})

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

Solution steps

cos (θ - 24 0^{\circ})

Rewrite using trig identities

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

cot (arcsin (u))

sin (\frac{3}{2} π - x)

sin (2 π f t) + sin (2 π f t - π)

sin (arctan (\frac{u}{3}))

- sin (9 t + 2 π) - 4 sin (- 9 t)

What is cos(θ-240) ?
The solution to cos(θ-240) is -1/2 cos(θ)-(sqrt(3))/2 sin(θ)