What is the projection of vector A- - 4 - - 3 - on vector B- - 3 - - 4 - -

If $\to a, \to b, \to c$ are three coplanar vectors then find the magnitude of their vector sum. It is given $\to a = 4^i -^j,$ $\to b = - 3^i + 2^j$ , $\to c = - 3^j$ .

Q. Find a vector

\to x

which is perpendicular to both

\to A

and

\to B

but has magnitude equal to that of

\to B

. Vector

\to A = 3^i - 2^j +^k

and

\to B = 4^i + 3^j - 2^k

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What is the projection of vector →A=4^i+3^j on vector →B=3^i+4^j ?

The correct option is D 24/5We know,Projection of A on B=A.B|B|Here,=(4i+3j).(3i+4j)5=245Option B is the correct answer

What is the projection of vector $\to A = 4^i + 3^j$ on vector $\to B = 3^i + 4^j$ ?

The correct option is D $24 / 5$

We know,

Projection of A on B= $\frac{A . B}{| B |}$

Here,

$= \frac{(4 i + 3 j) . (3 i + 4 j)}{5} = \frac{24}{5}$

Option $B$ is the correct answer