Question

an equilateral triangle has 1/2 cm side. find its altitude​

Answer 1

Answer:

$\huge\underline\red{\sf Answer}$

$In \: ∆ABD$

$(AD) {}^{2} = (2a) {}^{2} - (a) {}^{2}$

$(AD) {}^{2} = 4a {}^{2} - a {}^{2} = 3a {}^{2}$

$AD = \sqrt{3a}$

$\red{\boxed{\sf AD = √3a}}$