Question: Triangle ABC is such that AB = 5 cm, AC = 10 cm and ABC = 90. An arc of a circle, centre A and

Triangle ABC is such that AB = 5 cm, AC = 10 cm and ∠ABC = 90°. An arc of a circle, centre A and radius 5 cm, cuts AC at D.

a. State, in radians, the value of ∠BAC.

b. Calculate the area of the region enclosed by BC, DC and the arc BD.

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