2018 June(A11) Math Question 47

Trigonometry

- Pythagorean Theorem & sin cos tan

47. In the figure shown below, A, B, and D lie on a circle whose center is 0, a diameter is AB, CD is perpendicular to AB at C, the length of AD is 5 m, and the length of BD is 12 m. What is the length, in meters, of CD ?

Choice A

47. In the figure shown below, A, B, and D lie on a circle whose center is 0, a diameter is AB, CD is perpendicular to AB at C, the length of AD is 5 m, and the length of BD is 12 m. What is the length, in meters, of CD ?

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