$9.24 would be the total (couple extra decimals after it do not count as it's not counted over in real life nor could a penny be split)
<span>Hi! All you need to know is that cot stands for cotangent and its the reciprocal of tan i.e. cot(x) = 1/tan(x). You probably know that tan(pi/4) = 1 and that tan(3pi/4) = -1. Happily in these cases it means that cot and tan come out the same (1/1 = 1 and 1/-1 = -1).
-1 - (+1) = -2 and this divided by pi/2 = -2/(pi/2) which looks a bit untidy so multiply the top and bottom by 2 (to get rid of the 2 in pi/2) and the answer is -4/pi. HTH</span>
Answer:

Step-by-step explanation:
Given:
The
term of the sequence is given as:

In order to find the fourth term of this sequence, we need to plug in 4 for
in the above expression and solve. This gives,

Therefore, the fourth term of the sequence is
.
Answer:
The value of k is greater than or equal to 0, i.e. k≥7.
Step-by-step explanation:
The given equation is

The value of k must be a positive integer because k! is defined for k≥0, where k∈Z.
Subtract 48 from both the sides.



Using
, we get

Divide both sides by 48k.



Note: The value of m can be 0 or 1.
The value of k is positive integer, so the right hand side of the above equation must be a positive integer.
Since RHS of the equation is positive integer, therefore (k-1)! is completely divisible by 48.

Add 1 on both sides.


Therefore the value of k is greater than or equal to 0.