Name: SAT Math Help & School Math Mastery
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#39813

trigonometry

similarity

medium

75 sec

In the triangles shown above, angle C is a right angle and angle F is a right angle. If the measure of angle A is 40° and the measure of angle D is 50°, which of the following ratios is equal to $\frac{A C}{BC}$ ?

A.

$\frac{EF}{D F}$

B.

$\frac{D F}{EF}$

C.

$\frac{D E}{EF}$

D.

$\frac{EF}{D E}$