Draw a circle of radius 3cm. Take any point A outside the circle at a distance of 7cm from the centre of the circle. Construct the tangents from the point A to the circle.
Answers
Answer:
Given: Radius of the circle=3cm, OP=7cm.
Construction:
(i) With O as the centre draw a circle of radius 3cm.
(ii) Mark a point P at a distance of 7cm from O and join OP.
(iii) Draw the perpendicular bisector of OP. Let it meet OP at M.
(iv) With M as centre and MO as radius, draw another circle.
(v) Let the two circles intersect at T and T'.
(vi) Join PT and PT'. They are the required tangents. Length of the tangent, PT=6.3cm.
Verification:
In the right angled Δ OPT,
PT=
OP
2
−OT
2
=
7
2
−3
2
=
49−9
=
40
∴PT=6.3cm(approximately).
solution
Answer:
In this way we have to draw
Step-by-step explanation:
First draw a circle of radius 3 cm
then take 7 cm distance from centr and take point A then draw perpendicular bisector of O and A
then draw both tangents
