Answer:
y=12.73 x=9
Step-by-step explanation:
Answer:
4 - Complementary
5 - Supplementary
Step-by-step explanation:
i can't find the value of X
Answer:
c
Step-by-step explanation:
3 sin ( 2 x ) = 3 cos x
3 · 2 sin x cos x - 3 cos x = 0
6 sin x cos x - 3 cos x = 0 /: 3
2 sin x cos x - cos x = 0
cos x ( 2 sin x - 1 )
cos x = 0,
x 1 = π/2, x 2 = 3π/2;
2 sin x - 1 = 0
2 sin x = 1
sin x = 1/2
x 3 = π/6, x 4 = 5π/6.
-5/27
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