In Fig. AO = BO = 1 and AB = 5 cm . Find the value of DC .OC DO 2

AB is a chord of the circle with centre O AOC is the diameter and AT is the tangent at A. Proove that angle BAT = angleACB (use alternate angle to proove)

and AC are tangents to the circle, centre O. AO is a straight line passing through BC at D. If AO 10.8 cm and OC = 4.3 cm find B a). AC, b). AB, D A c). ∠BAO, d). ∠AOB, e). OD, f). BD, g). ZOBD, h). ∠DBA.

is a diameter of a circle with centre  O  and radius  OD  is perpendicular to  AB . If  C  is any point on arc  DB , then the value of  ∠BAD  and  ∠ACD  is

In the given figure, AB is parallel to DC and AB # DC, the area of AAOD is equal to area of triangle : (1) AOB (ii) COD (iii) ACB (iv) BOCplease give the explanation also​

In triangle ADC calculate angle A.(Answer to ONE decimal place and put only the number with no units in the answer box.)