If sin (y degrees) = cos (x degrees), which of the following statements is true?

Angle y and Angle x are complementary angles

Step-by-step explanation:

we know that

If

sin (y°) = cos (x°)

then

Angle y and Angle x are complementary angles

so

∠y+∠x=90°

∠x=90°-∠y

sin (y°) = cos (90°-y°)

therefore

The sine of an angle is equal to the cosine of its complementary angle