SAT Math Practice Question #28730 - SATify | SATify

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SAT Math Practice Question #28730 - SATify | SATify

#28730

trigonometry

algebra

hard

150 sec

Let $c = \frac{2 π}{11}$ . What is the value of

$\frac{sin 2 c \cdot sin 4 c \cdot sin 6 c \cdot sin 8 c \cdot sin 10 c}{sin c \cdot sin 2 c \cdot sin 3 c \cdot sin 4 c \cdot sin 5 c} ?$

A.

$- 1$

B.

$0$

C.

$\frac{1}{2}$

D.

$1$

E.

$2$