Question

If a makes equal angles with i j and k and has magnitude 3 then prove that the angle btw a and each of i j and k is cos-1 1/(3)-1/2

Answer 1

Answer:

$<font color=red><marquee behaviour=alternate>мαяк ⓐⓢ вяαiηℓisт</marquee></font>$

$<font color=green><marquee behaviour=alternate>тнαикѕ</marquee></font>$