Hm. good question! multiply 5x2 i believe, which should be 10. Hope I helped!
tan(theta) = opposite side/adjacent side
So tan (theta) = 1000/4000= 1/4
so theta= arc tan(1/4)= 0.245 radians= 0.245*180/pi = 14degree
So option a is correct.
No,It Won't. Because It Increases Right, Do You Get It?
Answer:

Step-by-step explanation:
Given
![A = \left[\begin{array}{ccc}-2&2&-5\\4&-1&-2\\1&3&-5\end{array}\right]](https://tex.z-dn.net/?f=A%20%3D%20%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D-2%262%26-5%5C%5C4%26-1%26-2%5C%5C1%263%26-5%5Cend%7Barray%7D%5Cright%5D)
Required
Determine the determinant of A (A')
If
![A = \left[\begin{array}{ccc}a&b&c\\d&e&f\\g&h&i\end{array}\right]](https://tex.z-dn.net/?f=A%20%3D%20%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7Da%26b%26c%5C%5Cd%26e%26f%5C%5Cg%26h%26i%5Cend%7Barray%7D%5Cright%5D)
Then,

So:
The determinant of
is





<em>Hence, the determinant is -51</em>