Let A→ $$=$$ $$i^Acos$$θ$$+j^Asin$$θ be any vector. Another vector B→ which is normal to A→ is

Correct option is 3i^Bsinθ− j^Bcosθ

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Let $\vec{A} = \hat{i} Acosθ + \hat{j} Asinθ$ be any vector. Another vector $\vec{B}$ which is normal to $\vec{A}$ is

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i^Bcosθ+ j^Bsinθ

i^Bsinθ+ j^Bcosθ

i^Bsinθ− j^Bcosθ

i^Bcosθ− j^Bsinθ

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detailed solution

Correct option is C

Dot product of two perpendicular vector will be zero.

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Let A→ = i^Acosθ+j^Asinθ be any vector. Another vector B→ which is normal to A→ is

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Let $\vec{A} = \hat{i} Acosθ + \hat{j} Asinθ$ be any vector. Another vector $\vec{B}$ which is normal to $\vec{A}$ is