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