The answer is going to be A.
Answer:
We conclude that the line joining the mid-point of two sides of a triangle is equal to half the length of the third side. The converse of this theorem states: If a line is drawn through the mid-point of a side of a triangle parallel to the second side, it will bisect the third side.
Hope this helped you! :)
From the picture, we can see the pair, bear in mind that terminal point pair is really the (x,y) pair or namely the (cosine, sine) pair, so we know what the cosine and sine are.
You will try all the cases and see if all the equations will match after substituting or no.
1.
5x
put x = 1/2
2.5 isn't equal to 20
4=15x
put x =1/2
15 × 1/3 =7.5
7.5 isn't equal to 4
-4x = 60
put x = 1/2
-4×1/2 = -2
-2 isn't equal to 60
30 = 60x
pit x = 1/2
60 × 1/2 = 30
30 = 30
Therefore, the correct answer is D. 30 = 60x
2. Answer is B. -4 , 4
Put x = -4
l 5 × -4 l = l-20l = 20
20 = 20
Put x = 4
l 5 × 4 l = l20l = 20
20 = 20
