In a triangle ABC, if |BC|=8... | Vector & 3D | JEE Main

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JEE MAIN 2021

18-03-21 S2

Question

In a triangle ABC, if $|\overrightarrow{\mathrm{BC}}|=8,|\overrightarrow{\mathrm{CA}}|=7,|\overrightarrow{\mathrm{AB}}|=10$, then the projection of the vector $\overrightarrow{\mathrm{AB}}$ on $\overrightarrow{\mathrm{AC}}$ is equal to:

Select the correct option:

A

$\frac{25}{4}$

B

$\frac{85}{14}$

C

$\frac{127}{20}$

D

$\frac{115}{16}$

✓ Correct! Well done.

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Solution

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