If in \triangle ABC, \overrightarrow{BA} = ...

CBSE Class 12 Math 2023 All Sets Solved Paper

Question : 5 of 20

Marks: +1, -0

If in

△ ABC, {BA}↖{→} = 2{a}↖{→}

and

{BC}↖{→} = 3{b}↖{→},

then

{AC}↖{→}

Solution:

By triangle law of addition,

{BA}↖{→}+{AC}↖{→}={BC}↖{→}

⇒ {AC}↖{→}={BC}↖{→}-{BA}↖{→}

=3{b}↖{→} - 2{a}↖{→}

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