Answer:
m6 = 117 degrees
m7 = 63 degrees
Step-by-step explanation:
I just asked my friend 0_0
Solution:
Give the following below

To find the cosine function, we will apply the general formula for cosine function below

To find the value of b


Substitute the values of the variables into the general formula for cosine function

Applying a graphing tool,
The graph of one cycle of the function is shown below