Question

if two tangents are inclined at 90 degree are drawn to a circle of radius 5cm then find the length of each tangents.​

Answer 1

Answer:

Let 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

Step-by-step explanation:

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