Question

if a b and BC are two tangents to a circle with centre o such that a = 120 degree find ABC​

Answer 1

Answer:

60 is the correct answer

Step-by-step explanation:

by JOINING AND ANGLE SUM PROPERTY

ok can ...can

Answer 2

Answer:

∠ABC=360°-300=30°

Step-by-step explanation:

In the quadrilateral OABC

∠A=∠C=90°

and given ∠ AOC=120°

∠A+∠C+∠AOC+∠ABC=360°

90+90+120+∠ABC=360°

∠ABC=360°-300=30°