find the altitude of an equilateral triangle when each of its side is 'a' centimetre...
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Altitude is Root3a//2
Draw a perpendicular and it also acts as median in an equilateral triangle
a^2=(a/2)^2+(height)^2
Height^2=a^2-a^2/4=3a^2/4
Height=Root3xa/2
Draw a perpendicular and it also acts as median in an equilateral triangle
a^2=(a/2)^2+(height)^2
Height^2=a^2-a^2/4=3a^2/4
Height=Root3xa/2
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