allery$\dfrac{3\pi}{2}$ radian = ?
A$90^{\circ}$
B$180^{\circ}$
C$270^{\circ}$
D$360^{\circ}$
Answer & Solution
Correct answer: C. $270^{\circ}$
$\dfrac{180}{\pi} \cdot \dfrac{3\pi}{2} = \dfrac{180 \cdot 3}{2} = 270^{\circ}$.
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