Two vectors \overrightarrow{{P}} and \overrightarrow{{Q}} have equal magnitudes. If the magnitude of \overrightarrow{{P}}+\overrightarrow{{Q}} is n times the magnitude of {{P}}^{\to}-\overrightarrow{{Q}}, then angle between {{P}}^{\to} and \overrightarrow{{Q}} is : [20 Jul 2021 Shift 2]

Correct Answer is : cos−1(n2−1n2+1)

\sin ^{-1}({{n}^{2}-1}/{{n}^{2}+1})

\cos ^{-1}({{n}^{2}-1}/{{n}^{2}+1})

JEE Main 20 July 2021 Shift 2 Solved Paper

Section: Physics

Question : 18 of 90

Marks: +1, -0

Two vectors

→

and

→

have equal magnitudes. If the magnitude of

→

is n times the magnitude of

→

−

→

, then angle between

→

and

→

is :

[20 Jul 2021 Shift 2]

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