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secondary 4 | A Maths
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Kathy
Kathy

secondary 4 chevron_right A Maths chevron_right Singapore

Thank you

Date Posted: 4 years ago
Views: 183
Eric Nicholas K
Eric Nicholas K
4 years ago
Seen. Just did the exact same questions yesterday but not in he forums.
Kathy
Kathy
4 years ago
Ok
Eric Nicholas K
Eric Nicholas K
4 years ago
The derivation of this is actually very easy. If you recall the length of a line segment given two coordinates, the formula is Pythagoras Theorem.

In a circle, drawing any line from the centre to a point on the circumference gives you different line segments as above, but all are the same length and represent the radii of the circle.

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Eric Nicholas K
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5997 answers (Tutor Details)
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Essentially Pythagoras theorem