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Vector Algebra question

2021 · 18 Mar · Shift 2 · Q32

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PYQ Library
JEE Main
Mathematics
Vector Algebra
2021 · 18 Mar · Shift 2 · Q32

Vector Algebra question

2021 · 18 Mar · Shift 2 · Q32

JEE MainMathematicsVector AlgebraMCQ+4 / −1

In a triangle ABC, if

|\overrightarrow {BC} | = 8,|\overrightarrow {CA} | = 7,|\overrightarrow {AB} | = 10

, then the projection of the vector

\overrightarrow {AB}

on

\overrightarrow {AC}

is equal to :

A
${{25} \over 4}$
B
${{127} \over 20}$
C
${{85} \over 14}$
D
${{115} \over 16}$

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