Question

Costheta+sin2theta=0

Answer 1

Answer:

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Step-by-step explanation:

sin2Θ + cosΘ = 0

2sinΘcosΘ + cosΘ = 0

cosΘ(2sinΘ + 1) = 0

cosΘ = 0: Θ = 90°, 270°

2sinΘ + 1 = 0

sinΘ = -1/2 : Θ = 210°, 330°

Solution set:

Θ = 90°, 210°, 270°, 330°