a. Show that the equation 2cos 2 x = 4 5 sin x may be written
Question:
a. Show that the equation 2cos2 x = 4 − 5 sin x may be written as 2sin2 x − 5sin x + 2 = 0.
b. Hence solve, for 0 ≤ x < 360°, the equation 2cos2 x = 4 − 5 sin x.
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a To show that the equation 2cos2x 4 5sinx can be written as 2sin2x 5sinx 2 0 well start by using th...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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