Solve for , in the interval 0 180, the following equations. Give your answers
Question:
Solve for θ, in the interval 0 ≤ θ ≤ 180°, the following equations. Give your answers to 3 significant figures where they are not exact.
a. 4 (sin2 θ − cos θ) = 3 − 2cos θ
b. 2sin2 θ = 3(1 − cos θ)
c. 4cos2 θ − 5sin θ − 5 = 0
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a Lets simplify the equation 4 sin2 cos 3 2cos Expanding 4sin2 4cos 3 2cos Rearranging terms 4sin2 2cos 3 Using the identity 1 cos2 sin2 41 cos2 2cos ...View the full answer
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Related Book For
Edexcel AS And A Level Mathematics Pure Mathematics Year 1/AS
ISBN: 9781292183398
1st Edition
Authors: Greg Attwood
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