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Mathematics
Mathematics
Problem
If
0
<
x
<
π
2
0 < x < \frac{\pi}{2}
0
<
x
<
2
π
, then the number of values of x for which
sin
x
−
sin
2
x
+
sin
3
x
=
0
\sin x - \sin 2x + \sin 3x = 0
sin
x
−
sin
2
x
+
sin
3
x
=
0
, is (1) 2 (2) 1 (3) 3 (4) 4
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