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Mathematics
Mathematics
Problem
Solve for
x
x
x
on
0
≤
x
≤
2
π
0 \le x \le 2\pi
0
≤
x
≤
2
π
, giving your answers as exact values: a.
2
sin
2
x
+
sin
x
=
0
2\sin^2 x + \sin x = 0
2
sin
2
x
+
sin
x
=
0
b.
2
cos
2
x
+
cos
x
−
1
=
0
2\cos^2 x + \cos x - 1 = 0
2
cos
2
x
+
cos
x
−
1
=
0
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