1.If a⃗,b⃗\vec{a}, \vec{b}a,b and c⃗\vec{c}c are unit vectors satisfying ∣a⃗−b⃗∣2+∣b⃗−c⃗∣2+∣c⃗−a⃗∣2=9|\vec{a} - \vec{b}|^2 + |\vec{b} - \vec{c}|^2 + |\vec{c} - \vec{a}|^2 = 9∣a−b∣2+∣b−c∣2+∣c−a∣2=9, then ∣2a⃗+5b⃗+5c⃗∣|2\vec{a} + 5\vec{b} + 5\vec{c}|∣2a+5b+5c∣ isa.111b.222c.333d.444Login to continueOnly logged in users canattempt or see the solution.
