Question

17) If two tangents are inclined at 67 are drawn to
a circle of radius 3.2 cm then find length of each
tangent.
x2​

Answer 1

Answer:

PA and PB be the two tangents to a circle with centre O and radius 3

∴∠APO=∠BPO

=

2

1

×∠APB

=

2

1

×60

0

=30

0

Also, OA⊥AP and OB⊥BP

In a right angled triangle OAP,

tan30

0

=

PA

3

⇒

3

1

=

PA

3

⇒PA=3

3

cm

⇒PA=PB=3

3

cm