In the diagram above, AO is perpendicular to OB. Find x
-
A.
7.5o -
B.
15o -
C.
22.5o -
D.
30o -
E.
38.6o
Correct Answer: Option D
Explanation
4x + 3x + 2x + 90 =360° [angle at a point]
9x + 90 = 360°
9x = 360° – 90°
9x = 270
x = 270/9
x = 30°
In the diagram above, AO is perpendicular to OB. Find x
4x + 3x + 2x + 90 =360° [angle at a point]
9x + 90 = 360°
9x = 360° – 90°
9x = 270
x = 270/9
x = 30°