Question

In a circle with centre ‘O’ AC is a tangent at ‘A’. If OC=4cm and ∠ACO=30

then the radius of the circle is







A. 3 cm

B. 4 3 cm

C. 2cm

D. 3cm​

Answer 1

C option is right

brainliest pls

Answer 2

Answer:

to find=OA(radius)

let us take SinA here

A=30

SinA= Opposite side(OA)

hypotenuse (OC)

Sin30°=OA

4

sin30°=1/2

1 = OA

2 4

OA=4

2

So,OA=2cm

C) is the correct answer.