3
Draw a circle of radius 4 cm. From the point 7 cm away from its centre,
construct the pair of tangents to the circle.
Answers
Answered by
1
Answer:
Construction :
1. Draw a circle with centre O and radius 3 cm.
2. Mark a point P such that OP=7 cm.
3. Draw a ⊥r bisector of AB, it meets AB at M.
4. Draw a circle with centre m and radius OM.
5. Two circles intersect at T and T
1
.
6. Join PT, PT
1
. They are required tangents.
Verification :
PT=
OP
2
−OT
2
=
7
2
−3
2
=
49−9
=
40
=6.3 cm
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