Solve the following equations. i. 4 sin 2x + 5 cos 2x = 0 for 0
Question:
Solve the following equations.
i. 4 sin 2x + 5 cos 2x = 0 for 0° ≤ x ≤ 180°.
ii. cot2 y + 3 cosec y = 3 for 0° ≤ y ≤ 360°
iii. cos(z + π/4) = - ½ for 0 ≤ z ≤ 2π radians, giving each answer as a multiple of π
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i We can begin by using the identity sin 2x 2 sin x cos x and cos 2x cos2 x sin2 x 1 2sin2 x Substit...View the full answer
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Related Book For
Cambridge IGCSE And O Level Additional Mathematics Coursebook
ISBN: 9781108411660
2nd Edition
Authors: Sue Pemberton
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