Question

Kyu yaad aa rahi hai mughe ye shairiya​

Answer 1

Answer:

If a→,  b→a→,  b→ and c→c→ are unit vectors along the sides of an equilateral triangle, taken in order such that ∣∣∣a→−b→∣∣∣2+∣∣∣b→−c→∣∣∣2+∣∣c→−a→∣∣2=9|a→−b→|2+|b→−c→|2+|c→−a→|2=9, then ∣∣∣2a→+5b→+5c→∣∣∣|2a→+5b→+5c→| is