Given that cos 2x = - 527/625 and that 0 < x < 90, find the exact

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Given that cos 2x = - 527/625 and that 0°< x < 90°, find the exact value of:

a. sin2x

b. tan2x

c. cos x

d. tan x

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Cambridge International AS & A Level Mathematics Pure Mathematics 2 & 3 Coursebook

ISBN: 9781108407199

1st Edition

Authors: Sue Pemberton, Julianne Hughes, Julian Gilbey

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Question Posted: Mar 14, 2023 07:17 AM

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Given that cos 2x = - 527/625 and that 0 < x < 90, find the exact

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cos 2x 2cosx 1 Rearranging this equation we get cosx cos 2x 12 Substituting the giv...View the full answer

Cambridge International AS & A Level Mathematics Pure Mathematics 2 & 3 Coursebook

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