Question

In the adjoining figure ac is a diameter of the circle and angle abd=30 find dac

Answer 1

Answer:

DAC is an angle in the adjoining figure.

Answer 2

Step-by-step explanation:

∠ADB = 1/2∠AOB = x/2

∠ADB = 90˚ - r

∠ADB = ∠ACB = q

Combining these, we get

x/2 = 90˚ – r = q

⇒ 2r = 180˚ - x

and x = 2q

∠DAC = ∠CAB

= ∠BDC

⇒ p = r = ½(180˚ – x)