2cos^2 x = 1 + cos 2x
cos^2 x = 1/2(1 + cos 2x)
f(x) = 6cos^2 x - 4 sin 2x = 6(1/2(1 + cos 2x) - 4 sin 2x = 3 + 3cos 2x - 4sin 2x
Answer:
f(- 4) = - 4
Step-by-step explanation:
f(- 4) with x = - 4 gives f(- 4) = - 4
I believe the answer is the first one
Answer:
B
Step-by-step explanation:
Simple interest is based on the principal amount of a loan or deposit.
Answer:
C) 3pi>9
Step-by-step explanation:
