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Vector Algebra question

2021 · 20 Jul · Shift 2 · Q38

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JEE Main
Mathematics
Vector Algebra
2021 · 20 Jul · Shift 2 · Q38

Vector Algebra question

2021 · 20 Jul · Shift 2 · Q38

JEE MainMathematicsVector AlgebraMCQ+4 / −1

In a triangle ABC, if

\left| {\overrightarrow {BC} } \right| = 3

,

\left| {\overrightarrow {CA} } \right| = 5

and

\left| {\overrightarrow {BA} } \right| = 7

, then the projection of the vector

\overrightarrow {BA}

on

\overrightarrow {BC}

is equal to :

A
${{19} \over 2}$
B
${{13} \over 2}$
C
${{11} \over 2}$
D
${{15} \over 2}$

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