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Mathematics
Mathematics
Problem
a. Solve
cos
θ
=
−
1
2
\cos \theta = -\dfrac{1}{2}
cos
θ
=
−
2
1
for
0
≤
θ
<
2
π
0 \le \theta < 2\pi
0
≤
θ
<
2
π
. b. From the values obtained in part (a), write the principal value of
θ
\theta
θ
.
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