SAT Math Practice Question #37431 - SATify | SATify

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SAT Math Practice Question #37431 - SATify | SATify

#37431

geometry

triangle

easy

45 sec

In $△ A BC$ shown, $A B = BC = 10$ and $m ∠ A = 3 0^{\circ}$ . If $\overline{B D}$ is an altitude to $\overline{A C}$ , what is the length of $\overline{B D}$ ?

A.

$5$

B.

$52$

C.

$53$

D.

$10$