दी गई आकृति में वृत का केंद्र O है ∠OAB = 30° तथा ∠OCB = 50° हो तो ∠AOC कितना होगा? - - Dee Gayi Aakriti Me Vrit Ka Kendra O Hai ∠OAB = 30° Tatha ∠OCB = 50° Ho To ∠AOC Kitna Hoga ? Maths in hindi, circles 40° question answers in hindi pdf 50° questions in hindi, Know About 20° Maths online test Maths notes in hindi quiz book 60°