Answer:
16600 should be the answer.
Step-by-step explanation:
because 830 times 20 is 16600.
hope i helped
9514 1404 393
Answer:
x = 0
Step-by-step explanation:
It can help to keep a graph of the cosine function in mind. It starts off at its maximum value at x = 0.
O, C , B , A because the important will disguise the sisomatic amplitude