∠QPR = 60 then what is ∠aob
its tooooooooooooooooooooooooooooooo simple
Answers
Answer:
∠AOB=120°
Step-by-step explanation:
∠QPR=60° then∠APB=60° and∠OAP=90°,∠OBP=90°
NOW,
FROM AOBP:
∠AOB=360°-(∠OAP+∠OBP+∠APB)
=360°-(90°+90°+60°)
=360°-240°
=120°
Given : ∠QPR = 60°
To Find : ∠AOB
A) 60°
B) 90°
C) 120°
D) can not be found
Solution:
∠QPR = 60°
∠APB = ∠QPR Vertically opposite angles
=> ∠APB = 60°
∠OAP = ∠OBP = 90° as AP and BP are tangents
Sum of 4 angles of a quadrilateral is 360°
∠AOB + ∠OAP + ∠OBP + ∠APB = 360°
=> ∠AOB + 90° + 90° + 60° = 360°
=> ∠AOB + 240° = 360°
=> ∠AOB = 360° - 240°
=> ∠AOB = 120°
Option C) 120° is correct
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