I got 157/990. Just don't ask me how. I just used my fancy TI-84 Calculator.
Step-by-step explanation:
By 30°-60°-90° triangle theorem:
Answer:
x = π/6, π/2, 5π/6, 3π/2
Step-by-step explanation:
cos x = sin(2x)
Use double angle formula.
cos x = 2 sin x cos x
Move everything to one side and factor.
cos x − 2 sin x cos x = 0
cos x (1 − 2 sin x) = 0
Set each factor to 0 and solve.
cos x = 0
x = π/2, 3π/2
1 − 2 sin x = 0
sin x = 1/2
x = π/6, 5π/6
The total solution is:
x = π/6, π/2, 5π/6, 3π/2
Answer:
136
Step-by-step explanation:
Just took the test and got it right good luck with the rest
Answer:
the solution of the compound inequality is A.
