Poh Wen Lin's answer to shu's Secondary 3 A Maths Singapore question.
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i) Using TOA CAH SOH to find sides OA and AC. Then find arc length and BC and sum AB, AC & BC up for perimeter.
ii) Find area of sector and area of triangle. Take area of triangle minus area of sector to get shaded area.
ii) Find area of sector and area of triangle. Take area of triangle minus area of sector to get shaded area.
Date Posted:
2 years ago
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