Question

Look at the figure.

The figure shows two right angle triangles have a common side AC. Triangle ABC has length of BC equal to 5 centimeters, the measure of angle ABC is 90 degrees and the measure of angle BAC is y degrees. Triangle ACD is a right triangle with angle DAC equal to 90 degrees, angle ACD equal to x degrees and AD equal to 10 centimeters.

Based on the figure, which equation is true?
Answer

cos x° = 2 tan y°

tan x° = 2 sin y°

sin x° = 2 cos y°

sin x° = 2 tan y°