Question

Solve: sin^2 x = cos^2 x for 0 degrees < x<360 degrees

Answer 1

45°, 135°, 225° and 315°

Answer 2

Just imagine the unit circle.

Answer 3

so would 45°, 135°, 225° and 315° be the answer?

Answer 4

@No-data

Answer 5

Square root both sides.

You should get sin x = cos x

Answer 6

"so would 45°, 135°, 225° and 315° be the answer?"

Yes.

Answer 7

It's only when sin x and cos x share the same value.

Answer 8

hope this helps :)

Sin^2x + Cos^2x = 1 ( what i used)