Question

If a, b, c are
unit vectors such that
a + b + √3.c = 0, then: major angle (a, b) =​

Answer 1

Answer:

a+b+c=0

a+b=-c

|a+b|=|c|

a²+b²+2abcos∆=|c|²

1+1+2cos∆=1

cos∆= -1

∆=π

hope help

Answer 2

Answer:

a + b = -√3 c

|a|^2 + |b|^2 + 2 a.b cos€ = 3|c|

In a question they told a, b and c are unit vectors

1 + 1 + 2 a.b cos€ = 3

2 a.b cos€ = 1

a.b cos€ = 1/2

a.b cos€ = cos π/3

a.b = π/3

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