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patriot [66]
3 years ago
9

4sinθ – 1 = - 3 for 0<θ< 360

Mathematics
1 answer:
EastWind [94]3 years ago
7 0

Answer:

\theta = 210^\circ or \theta = 330^\circ

Step-by-step explanation:

4 \sin \theta - 1 = -3

4 \sin \theta = -2

\sin \theta = \dfrac{-2}{4}

\sin \theta = -0.5

For sin θ = 0.5, the reference angle is θ = 30 deg.

\sin 30^\circ = 0.5

\theta = 210^\circ or \theta = 330^\circ

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