First, lets note that

. This leads us with the following problem:

Lets add sin on both sides, and we get:

Now if we divide with sin on both sides we get:

Now we can remember how cot is defined, it is (cos/sin). So we have:

Now take the inverse of cot and we get:

In general we have

, the reason we have to add pi times n, is because it is a function that has multiple answers, see the picture:
Answer:

Step-by-step explanation:

Probability of drawing a heart from one deck:

Therefore, probability of drawing a heart from each of 3 decks:

All you have to do is try both of the equations by filling in the variables with the choices.
-5 > -3 (2) + 3
-5 > -5 + 3
-5 > -2
-5 > (2) + 2
-5 > 4
So, this does not work.
--------------------------------------------
5 > -3 (-2) + 3
5 > 5 + 3
5 > 8
5 > (-2) + 2
5 > 0
So, this does not work.
-------------------------------------------
5 > -3 (2) + 3
5 > -5 + 3
5 > -2
5 > 2 + 2
5 > 4
So, this works.
-----------------------------
-5 > -3 (-2) + 3
-5 > 5 + 3
-5 > 8
-5 > (-2) + 2
-5 > 0
So, this does not work.
The answer would be C.
I hope this helps!
Divide the denominator from the numerator.
For example:
1/8 is the same as 1÷8
Then do long division:
_____
8) 1
You will get 0.125
They could be putting 2,3,5,6,or 10 .