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Mathematics
Mathematics
Problem
If
sin
θ
+
sin
2
θ
+
sin
3
θ
=
1
\sin \theta + \sin^2 \theta + \sin^3 \theta = 1
sin
θ
+
sin
2
θ
+
sin
3
θ
=
1
, then the value of
cos
6
θ
−
4
cos
4
θ
+
8
cos
2
θ
\cos^6 \theta - 4 \cos^4 \theta + 8 \cos^2 \theta
cos
6
θ
−
4
cos
4
θ
+
8
cos
2
θ
must be
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