Question

plz give the correct answer..it is urgent

Answer 1

105 degree

write draw ,know that

Answer 2

Ans= 105⁰

Step-by-step explanation:

as we know that angle subtended by an arc at the centre is double the angle formed any where in the circle.

so, angle ACB = 1/2angle AOB

OR, angle. ACB = 1/2×90⁰

OR, angle ACB = 45⁰

NOW in ∆ABC

angle ABC = 30⁰

& angle ACB = 45⁰ (solved above)

so ,angle ABC +angle ACB + angle CAB = 180⁰ (by angle sum property)

or, 30+45+CAB =180⁰

OR, CAB = 180-75 = 105⁰

SO our required answer is 105⁰

I hope it will help you !