Here is triangle ABD. B
Diagram NOT
accurately drawn
8 cm
с
20
13 cm
D
The point C lies on BD.
AD = 13 cm BC = 8 cm
angle ADB = 90°
angle CAD = 20
Calculate the size of angle BAC.
Give your answer correct to 1 decimal place,
(5 marks)

Evaluate 4 a for a = 5 2/3 . express your answer in simplest form.

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