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Mathematics
Problem
State the triple-angle identities for the following. a. (i)
sin
3
x
\sin 3x
sin
3
x
in terms of
sin
x
\sin x
sin
x
. b. (ii)
cos
3
x
\cos 3x
cos
3
x
in terms of
cos
x
\cos x
cos
x
.
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