Hard SAT Math Question 14 — Video Explanation | 1600.now

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For triangle

D EF

, the sum of the measures of angles

D

and

E

is

9 0^{\circ}

. If

cos (D) = \frac{1}{9} 3

, what is the value of

sin (E)

?

A

\frac{1}{9} 3

B

\frac{3}{4}

C

93

D

\frac{4}{3}