Inside a geometry box we find a pair of set-squares, one with angles 90°, 60° and 30° and other with angles 90°, 45° and 45°.
If 2∠A=3∠B=6∠C in a ΔABC, then ∠A, ∠B, ∠C are
In figure, A, B and C are three points on a circle with centre O such that ∠BOC = 30∘ and ∠AOB = 60∘. If D is a point on the circle other than the arc ABC, find ∠ADC.