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Matematika

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Variable Legend

a,b,c= side lengthsA,B,C= angles opposite sides a, b, cs= semi-perimeter = (a+b+c)/2

Law of sines

Relates sides and their opposite angles.

Law of cosines

Generalisation of Pythagorean theorem.

Find side c
Find angle C

Area (Heron's formula)

Area from three sides only.

s
Area

Area from base and height

Standard formula.

Deep Dive

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Reviewed June 2026
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