a) Express cos (3 + x) in terms of cos x. b) Express sin (x + 4)
Question:
a) Express cos (3π + x) in terms of cos x.
b) Express sin (x + 4π) in terms of sin x.
c) Express sin (x − π) in terms of sin x.
d) Express tan (x − π) in terms of tan x.
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a Using the angle sum identity for cosine we have cos3 x co...View the full answer
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Related Book For
Complete Pure Mathematics 1 For Cambridge International AS & A Level
ISBN: 9780198427438
2nd Edition
Authors: Jean Linsky, Brian Western, James Nicholson
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