Here is how to work the problems and write the expressions.
The angle of B is 56.2 degrees
<em><u>Solution:</u></em>
Given is a right angled triangle ABC
From given figure,
AB = 9
CB = 5
We have to find the angle of B
Let the angle of B be 
By definition of cosine,

Here, adjacent = CB and hypotenuse = AB
Therefore,

Taking cos inverse on both sides,

Thus the angle of B is 56.22 degrees
Hey!
Let's start by writing the problem:

Subtract 7 from both sides.


Subtact 12x from both sides.


Divide both sides by -10.


Let me know if you have any questions regarding this problem!
Thanks!
-TetraFish
They are the same exact thing they both mean divide
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I don't know of any algebraic way to answer this, but 59,60,61 add up to 180, and 60^3 would be the greatest product of 3 numbers, so 59,60,61 yield the greatest product.