Answers

  • qais
  • Content Quality
2015-12-22T21:56:34+05:30

This Is a Certified Answer

×
Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
Let the altitude be L units
side be A units
to prove , 3A² = 4L²
since the altitude perpendicularly divides the side into two equal parts 
so, by Pythagores theorem.
altitude, L² = (A² - (A/2)²)
                  = A²- A²/4
                  =3A²/4
by cross multiplication, 
4L² = 3A² proved 

1 5 1