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secondary 3 | A Maths
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secondary 3 chevron_right A Maths chevron_right Singapore

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Date Posted: 1 year ago
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Tzu En
Tzu En's answer
133 answers (Tutor Details)
1st
a is the amplitude, which is the radius. Imagine a guy that was initially on top of the wheel and it starts turning. The height of his position will decrease and follow the shape of the cosine graph and the lowest point will occur at half a period where he is 18m above ground.
b is basically the value that is needed to shift the entire graph up.