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Mathematics
Problem
Evaluate:
∫
cos
2
x
−
cos
2
a
cos
x
−
cos
a
d
x
.
\int \frac{\cos 2x - \cos 2a}{\cos x - \cos a} dx.
∫
cos
x
−
cos
a
cos
2
x
−
cos
2
a
d
x
.
(M-1)
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