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 x degrees. Triangle ACD is a right triangle with angle DAC equal to 90 degrees, angle ACD equal to y degrees and DC equal to 10 centimeters.

Based on the figure, which equation is true?

Answer 1

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 x degrees. Triangle ACD is a right triangle with angle DAC equal to 90 degrees, angle ACD equal to y degrees and DC equal to 10 centimeters.

Answer 2

a) cos x degrees = tan y degrees
b) tan x degrees = sin y degrees
c) sin x degrees = cos y degrees
d) sin x degrees = tan y degrees