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secondary 3 | E Maths
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secondary 3 E Maths Singapore

I do not know how to solve

Date Posted: 5 years ago

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Arnold K H Tan

5 years ago

Part a) use cosine rule to find angle ACD.
Part b) angle ACB = 180 - angle ACD
Angle CAB = 180 - (Angle sum of a triangle)
Find BC using sine rule
Part c) use 1/2 (CB)(CA)sinACB

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Better late than never :))

Date Posted: 5 years ago

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