Answers the answer for question one is 3 , for question number two the answer is 9 and the answer for the last question is 24
Step-by-step explanation:
Answer:

Step-by-step explanation:
For any triangle, the Law of Cosines is given by
, where all three variables are interchangeable.
Therefore, we have:

Answer:
15/x=1/3
Step-by-step explanation:
The quotient of 15 and a number=15/x=1/3
15/x=1/3
Answer:
a, (5;1) R = 
b, (-2; 4) R = 
c, (4;7) R = 7
d, (-3; -6) R = 7
Step-by-step explanation:
The angle of elevation from point C to point A is 
<em><u>Solution:</u></em>
Given that we have to find the angle of elevation from point C to Point A
Given in figure that, angle A = 
Given is a right angled triangle ABC where angle B = 
We have to find angle C
The angle sum property of a triangle states that the angles of a triangle always add up to 180°
Therefore, in given triangle ABC
angle A + angle B + angle C = 180


Therefore angle C = 