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​Q22: Question – Paper 1 – June 2017

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Content:

• The Cosine Rule – Finding a Length
• The Cosine Rule – Finding an Angle​

Quizzes:

• The Cosine Rule

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Question

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22) ​
The diagram shows a hexagon ABCDEF.

ABEF and CBED are congruent parallelograms where AB = BC = x cm.
P is the point on AF and Q is the point on CD such that BP = BQ = 10 cm.

Given that angle ABC = 30°,
​prove that

[5 marks]

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