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Mathematics
Mathematics
Problem
If
sin
θ
=
1
2
\sin \theta = \dfrac{1}{2}
sin
θ
=
2
1
for an acute angle
θ
\theta
θ
, evaluate
4
cos
2
θ
−
3
sin
2
θ
4\cos^{2}\theta - 3\sin^{2}\theta
4
cos
2
θ
−
3
sin
2
θ
.
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