Question

who is father of trignometry and definition trignometry​

Answer 1

Answer:

Hipparchus of Nicaea is farther of trigonometry

Answer 2

$\sf{Father_{(Trigonometry)} \:=\: Hipparchus\: of \:Nicaea}$

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$\sf{Definition_{(Trigonometry)} \:=\: I.D.K.\tiny{ .·´¯`(>▂<)´¯`·.}}$