VectorHard

Question

= 0 and A + B - C = 0. What is the angle between and ?

Options

A.90^o

B.0^o

C.45^o

D.tan^-1

Solution

C² = A² + B² + 2AB cos θ
and C = A + B
so, C² = A² + B² + 2AB
than cos θ = 1 ⇒ θ = 0^o

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