Answer:
cot(x)
Step-by-step explanation:



Recall the Pythagorean Identity 
Answer:
Reference angle:
is not defined.
Step-by-step explanation:
The angle
goes from the positive x-axis to the negative y-axis.
Therefore the reference angle can be calculated as following:

We know that
is:

If
then
, therefore
is not defined, because the division by 0 is not defined.
Answer:
the answer is 8
Step-by-step explanation:
5 times 8 =45 5 time table
Independent Variable: Hours hiking
Dependent variable: Amount of calories burned