Question

Two tangents PA and PB to a circle with centre O are inclined to each other at 70°. Find OAB​

Answer 1

Answer:

∠APB=70

o

∴ ∠APO=

2

1

∠APB

=

2

1

×70

=35

o

∠PAO=90

o

∴ In △OAP

∠OAP+∠APO+∠POA=180

o

∠AOP=180

o

−35−90

∠AOP=55

o