Question

Find sandy
2
21
& ty = 2
a
6
ax-by = (a²-12​

Answer 1

∠A=∠B=90

(tangent is perpendicular)

So ∠AOB+∠A+∠B+30 =360

∠AOB+90 +90 +30 =360

∠AOB=360 −210

∠AOB=150

Hope it will helps you ☺️