the length of the tangent from a point a to a circle of radius 3 cm is 4 cm the distance in cm of from the centre of the circle is
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Answered by
13
Given: PQ is a tangent to the circle intersect at Q. OP = 4 cm and OQ = 3 cm.
To find: PQ
Proof:
In rt.△ OQP, by Pythagoras theorem,
PQ²= OP²+OQ²
PQ²=(4)²+(3)²
PQ²=16+9
PQ=5 cm
Therefore, the length of the tangent from a point is 5 cm.
To find: PQ
Proof:
In rt.△ OQP, by Pythagoras theorem,
PQ²= OP²+OQ²
PQ²=(4)²+(3)²
PQ²=16+9
PQ=5 cm
Therefore, the length of the tangent from a point is 5 cm.
Answered by
4
The distance between the point and the centre is 5cm.
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