a. Express 7 sin 2 x + 4 cos 2 x in the form a + b
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a. Express 7 sin2x + 4 cos2x in the form a + b sin2x.
b. State the range of the function f(x) = 7 sin2 x + 4 cos2x, for the domain 0 ≤ x ≤ 2π.
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aFrom the trigonometric identitywe know that sin 2 x cos 2 x 1 Eq1 As we have given ...View the full answer
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Related Book For
Cambridge International AS And A Level Mathematics Pure Mathematics 1 Coursebook
ISBN: 9781108407144
1st Edition
Authors: Sue Pemberton, Julian Gilbey
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