In the triangle ABC below, BC = 12 cm, A ABC = 80° and L ACB = 30°. 5.Calculate correct to 4 significant figures. the area of triangle ABC. (3 marks) Given that the exterior angle of a regular hexagon is x. find the size of each interior angle of the hexagon. (2 marks)

/in /by

In the triangle ABC below, BC = 12 cm, A ABC = 80° and L ACB = 30°.

 

a.Calculate correct to 4 significant figures. the area of triangle ABC.

Given that the exterior angle of a regular hexagon is x.

find the size of each interior angle of the hexagon.

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