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21 June, 06:45

How did early mathematicians define trigonometric functions?

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  1. 21 June, 07:50
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    Ancient Greek and Hellenistic mathematicians made use of the chord. Given a circle and an arc on the circle, the chord is the line that subtends the arc. A chord's perpendicular bisector passes through the center of the circle and bisects the angle. One half of the bisected chord is the sine of one half the bisected angle.

    Like this one

    chored0=2sin0/2

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