Answer:
c.vertical angle is the answer
If you would like to solve a^(-5)b^(-4) / a^(-13)b^8, you can do this using the following steps:
a^(-5)b^(-4) / a^(-13)b^8 = a^13 / a^5b^4b^8 = a^8 / b^12
The correct result would be c. a^8 / b^12.
Given:
The sine function is:

To find:
The frequency of the graph of given function.
Solution:
If a sine function is defined as:

Then, the frequency of the sine function is:

We have,

Here,
. So, the frequency of the given function is:


Therefore, the correct option is D.