1.

46, Let AAcos0+ JA sin0, be any vector. Anothervector B which is normal to A is:-(1) iBcose +jBsin θ(2) iB sin θ+jBcosesin θ--(B cos

Answer»

we have to check manually for the DOT product to be zero..

so, in option 3.

A•B = (Acos∅i+Asin∅j)•(Bsin∅i-Bsin∅j) = ABcos∅.sin∅ -ABsin∅cos∅ = 0

so, option 3 is correct.



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