Two vectors P and Q have equal magnitudes. If the magnitude of P + Q is n times the magnitude of P - Q, then angle between P and Q is:

(D) cos ⁻¹((n² - 1)/(n² + 1))

(C) sin ⁻¹((n² - 1)/(n² + 1))

Kinematics: JEE Main 2021 Physics question

JEE Main 2021 · 20 Jul, Evening shift · Q8377

JEE Main 202120 Jul, Evening shiftPhysicsMediumKinematics177× since 2002

Two vectors

{\overrightarrow P }

and

{\overrightarrow Q }

have equal magnitudes. If the magnitude of

{\overrightarrow P + \overrightarrow Q }

is n times the magnitude of

{\overrightarrow P - \overrightarrow Q }

, then angle between

{\overrightarrow P }

and

{\overrightarrow Q }

is :

JEE Main 2021 Kinematics Question with Solution (20 Jul Evening shift, Q8377) | JEE Arc