Dear sir/madam<
rnkindly help me out in the questions below:
rn1) In triangle ABC, P and Q are the points on the sides AB and AC respectively such that PQ is parallel to BC. Prove that median AD drawn from A to BC bisects PQ also.
rn2) In an equilateral triangle ABC, AD perpendicular to BC. Prove that 3AB square=4AD square.
1.
Here is the link for the answer to your query.
2.
@s.kamarajpandian : You had correctly provided the answer of the said query. Keep Posting!!
I would like to mention that in 4th line on LHS 1 + 2 stands for adding of equations (1) and (2).
Cheers!!