The distance FM is half of the length of the chord. (The perpendicular from the centre of a circle to a chord bisects the chord.) In the diagram below, AB is the chord of a circle with centre O. OM is ...
An understanding of how to use Pythagoras’ theorem to find missing sides in a right-angled triangle is essential for applying the theorem in different contexts. (3,1) is the coordinate that is 3 along ...
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