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Trigonometry

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Which is a $\cfrac{7\pi}{4}$ radian angle on the Unit Circle?

TRIG-FDIVBX

Which of the following points represents an angle measure of $\cfrac{7\pi}{4}$ radians on the Unit Circle?

A

$(1, 0)$

B

$(\cfrac{\sqrt{3}}{2}, -\cfrac{1}{2})$

C

$(\cfrac{\sqrt{2}}{2}, -\cfrac{\sqrt{2}}{2})$

D

$(\cfrac{1}{2}, -\cfrac{\sqrt{3}}{2})$