Question

Jika sin (x) - cos (x) = p maka sin (x) . cos (x) =

Answer 1

(sin x - cos x)² = p²
sin² x + cos² x - 2sin x cos x = p²
1 - 2 sin x cos x = p²
2 sin x cos x = 1 - p²
sin x cos x = (1 - p²)/2