Question

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

42°; 42°

42°; 48

42°; 138°

42°; 132°

Answer 1

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

Answer 2

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

Answer 3

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.

Answer 4

okay thank you that helps a lot

Answer 5

can you help me with another one?

Answer 6

what's your answer for this one?

Answer 7

i put 42, 48

Answer 8

excellent choice :-)