Question

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derivation of heron's formula [class 9 method]

$\bold{DON'T\: DERIVE\: USING \:TRIGNO}$.

CLASS 9 METHOD

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Answer 1

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Answer 2

Proof Using Pythagoras Theorem

Area of a Triangle with 3 Sides

Note: Heron’s formula is applicable to all type of triangles and the formula can also be derived using the law of cosines and the law of Cotangents.

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