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If veca and vecb are two vectors, can ve...

If `veca` and `vecb` are two vectors, can `veca+vecb` be equal to zero?

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If veca and vecb are two vectors such that |veca+vecb|=|veca| , then prove that the vector 2veca+vecb is perpendicular to vector vecb .

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If veca and vecb are two unit vectors such that veca+vecb is also a unit vector, then find the angle between veca and vecb .

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If veca" and "vecb are any two vectors, then (veca xx vecb)^(2)= |veca|^(2)|vecb|^(2)-(veca* vecb)^(2) .

If veca and vecb are two vectors such that |veca*vecb|=|vecaxxvecb| , then what is the angle between veca and vecb ?

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If veca and vecb are othogonal unit vectors, then for a vector vecr non - coplanar with veca and vecb vector vecr xx veca is equal to

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