If a^{\to} = \text{5i^{\^}−j^{\^}−3k^{\^} \text }" " b^{\to} = i^{\^}−3j^{\^} + 5k^{\^} the angle between a^{\to} + b^{\to} and a^{\to}−b^{\to} is:

CUET UG Math 19 Jun 2023 Paper

Question : 26 of 50

Marks: +1, -0

a↖{→} = \text"5i↖{\^}−j↖{\^}−3k↖{\^} \\;\text "" "\;b↖{→} = i↖{\^}−3j↖{\^} + 5k↖{\^}

the angle between

a↖{→} + b↖{→}

and

a↖{→}−b↖{→}

is:

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