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
The answer is 5. 25^1/2 is the same thing as the square root of 25. The square root of 25 is positive 5 or negative 5 because
5 x 5 = 25 and -5 x -5 = 25.
25 bro lol hope this help
Answer:
the first, second and fifth ones
Step-by-step explanation:
Amount in compound interest = p(1 + r)^n where p is the initial deposit, r = rate and n = period.
Here, Amount after 36 months = 1000(1 + 0.1/100)^36 = 1000(1 + 0.001)^36 = 1000(1.001)^36 = 1000(1.036637) = $1,036.64
