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

Source: https://1600.now/hard/14

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14

For triangle $DEF$, the sum of the measures of angles $D$ and $E$ is $90^\circ$. If $\cos(D) = \frac{1}{9}\sqrt{3}$, what is the value of $\sin(E)$?

A

$\frac{1}{9}\sqrt{3}$

B

$\frac{3}{4}$

C

$9\sqrt{3}$

D

$\frac{4}{3}$