Question

If cos theta = -sin theta,then sin^2 theta is what?

Answer 1

cosØ = -sin

cosØ/sinØ = -1
cotØ = -1
tanØ = -1, so Ø = 135 degrees

sin 135 = 1/√2
sin Ø = 1/√2
sin ^2 Ø = 1/2