Math, asked by danish2nov, 8 months ago

Q9. In Fig. 9.5, AT is a tangent to the circle with centre O such that OT = 4 cm and ∠OTA = 30°. Then AT is equal to (A) 4 cm (B) 2 cm (C) 2 √3 cm (D) 4 3 cm

Answers

Answered by vijayababu3399
2

Step-by-step explanation:

ANSWER

if we join OA the OAT is a right angled triangle [since tangent is perpendicular to the circle]

so now OT=4cm,∠OTA=30

therefore from cos rule we know AT=OTcos(30)=4×

2

3

=2

3

Similar questions