Prove each of these identities. a. b. c. d. e. f. g. h. cosx - sinx cos
Question:
Prove each of these identities.
a.
b.
c.
d.
e.
f.
g.
h.
Transcribed Image Text:
cos²x - sin²x cos x − sin x = cos x + sinx
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Prove each of these identities a Solution cos 2 x sin 2 xcos x sin x cos x 2 sin x 2 cos x sin x As we know that a 2 b 2 abab cos x sin xcos x sin xco...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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