Find the value of x in the given figure.
R
(2x + 60)
(3x - 40°
P
0
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9
Answer:
63
o
We know that the angle inscribed at the centre of the circle by an arc is twice the angle subtended at the circumference by the same arc.
∠AOB is the angle at the center and ∠ACB is the angle at the circumference.
∴∠ACB=
2
1
∠AOB=
2
1
(123
o
)=63
o
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0
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