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​Q18: Question – Paper 3 – June 2017

Helpful Links

Content:

• Circle Theorem: Tangents – Part 1
• Circle Theorems: Tangents – Part 2
• Trigonometry – Finding an Angle
• Arc Length​

Quizzes:

• Circle Theorems: Tangents
• Trigonometry – Finding an Angle
• Arc Length

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Question

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​18) 

A, B and C are points on a circle of radius 5 cm, centre O.
DA and DC are tangents to the circle.
DO = 9 cm

​Work out the length of arc ABC.
Give your answer correct to 3 significant figures.

[5 marks]​

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