Answer: 
Step-by-step explanation:
Given
The point C
is rotated
clockwise about the origin
If a point is rotated
about the origin, then the sign of the co-ordinates changes without changing the order of coordinates.
So,C
becomes C'
after the rotation.
Answer:

Step-by-step explanation:
using the cosine ratio;

From the question, the side of the right angle triangle that is adjacent to the measured <a,(i.e BAC) is AC=24 and the hypotenuse is AB=25
This implies that,

Answer:
B
Step-by-step explanation:
7+r=15
-7 -7
r = 8
B.8
Answer:
n^2 - n - 12 = (n+3)(n-4)
Step-by-step explanation:
3 times - 4 = -12 ( two numbers when multiplied = -12, when added=-1)
3 + -4 = -1