Question

In an equalateral triangle of side 2a. Find its altitude

Answer 1

Answer:

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Answer 2

Answer:

In an equilateral triangle each angle is of 60°

In ΔABC ,AD  is a altitude

In ΔADC, ∠ADC=60°

Sin 60°=AD/AB

 √3/2=AD/2a

2a√3/2=AD

AD=√3a

Length of altitude of equilateral triangle of side 2a=√3a