Step-by-step explanation:
which expression there is no expression here
The cotangent function is defined as the ratio between cosine and sine of a given angle, i.e.

Since you can't have zero at the denominator, the cotangent function is not defined when the sine is zero.
Let's look at your option:
, so the cotangent is defined here
, so the cotangent is not defined here
, so the cotangent is defined here
, so the cotangent is defined here
Just divide the y numbers by the x numbers and that's it
First multiply 17 by the percentage:
17 x .35= 5.95
Then subtract that answer from 17:
17 - 5.95= 11.05
35% of 17 is 11.05