Answer:
-42.08163265
Step-by-step explanation:
Answer:
529
Step-by-step explanation:
Answer:
ZERO
Step-by-step explanation:
All steps in the picture , I hope this is a clearly.
Step 1
Given;

Required: To solve the equation.
Step 2
Solve the equation

Answer;
General equation of a cosine function:

, where a is the amplitude and

is the period.
Hence, a = 2 and

Thus, the equation is