Given that cos x = - 3/5 and that 90 < x < 180, find the exact
Question:
Given that cos x = - 3/5 and that 90° < x < 180°, find the exact value of:
a. sin2x
b. sin 4x
c. tan2x
d. tan1/2x
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We can use the Pythagorean identity sin2x cos2x 1 to find sin x sin...View the full answer
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Related Book For
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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