Question

15. AT is a tangent to the circle with centre 0 such that OT = 4 cm and LOTA = 30° then AT is equal to : ​

Answer 1

Answer:

We know tangent makes 90

o

with centre.

Given ∠ATO=30

o

& OT=4cm

cos30

o

=

OT

AT

=

4

AT

2

3

=

4

AT

⇒AT=4×

2

3

=2

3

.