Question

Is square root 1 minus cosine squared theta = −sin Θ true? If so, in which quadrants does angle Θ terminate?

Answer 1

False

True; quadrants I & IV

True; quadrants II & III

True; quadrants III & IV

Answer 2

(1 - cos^2 x) = sin^2 x
Sqr.(1 - cos^2 x) = sin x and (-sinx)
True, since sin x negative, then x terminates in quadrant 3 and 4.