Which pair of angles has congruent values for the sin x° and the cos y°?

42°; 42°

42°; 48

42°; 138°

42°; 132°

Question

Which pair of angles has congruent values for the sin x° and the cos y°?

42°; 42°

 42°; 48

 42°; 138°

 42°; 132°

whpalmer4 · Answer

Sin and Cos are complementary:  $$\cos x^\circ = \sin (90^\circ -x)$$and vice versa

anonymous · Answer

i dont understand what that means i dont really know what im doing

whpalmer4 · Answer

It means that if the values of sin and cos are equal (which is true in your problem — "congruent values for the sin x and cos y"), then the angles must add to 90 degrees.

anonymous · Answer

okay thank you that helps a lot

anonymous · Answer

can you help me with another one?

whpalmer4 · Answer

what's your answer for this one?

anonymous · Answer

i put 42, 48

whpalmer4 · Answer

excellent choice :-)