Tolong jawab ya nomor 22 dan 23
Jawaban Terkonfirmasi
22) tan x √(1 – sin^2 x) = 3/4
[(sin x)/(cos x)] . √(cos^2 x) = 3/4
[(sin x)/(cos x)] . cos x = 3/4
Sin x = 3/4
23) sin x – cos x = 1/4
(sin x – cos x)^2 = (1/4)^2
sin^2 x – 2 sin x cos x + cos^2 x = 1/16
sin^2 x + cos^2 x – 1/16 = 2 sin x cos x
1 – 1/16 = 2 sin x cos x
15/16 = 2 sin x cos x
8 sin x cos x = 4 . 2 sin x cos x = 4 . 15/16 = 60/15