Solve the following equations for , in the interval 0 < < 2, giving your answers
Question:
Solve the following equations for θ, in the interval 0 < θ < 2π, giving your answers to 3 significant figures where they are not exact.
a. Cos θ + 2 sin2 θ + 1 = 0
b. 10 sin2 θ = 3 cos2 θ
c. 4 cos2 θ + 8 sin2 θ = 2 sin2 θ − 2 cos2 θ
d. 2 sin2 θ − 7 + 12 cos θ = 0
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Related Book For 
Pearson Edexcel A Level Mathematics Pure Mathematics Year 2
ISBN: 9781292183404
1st Edition
Authors: Greg Attwood, Jack Barraclough, Ian Bettison, David Goldberg, Alistair Macpherson, Joe Petran
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