if a^{-}=2i^{ ∧}+j^{ ∧}-3k^{ ∧} and b^{-}=3i^{ ∧}-j^{ ∧}+2k^{ ∧},then find the angle between the vectors 2a^{-}+b^{-} and a^{-}+2b^{-}.

Correct Answer is : None of the above

\cos^{-1}(36/\sqrt{42\times35})

\cos^{-1}(72/\sqrt{24\times32})

\cos^{-1}(52/\sqrt{74\times65})

\cos^{-1}(24/\sqrt{18\times32})

AP EAMCET Engineering 18 Sep 2020 Shift 1 Paper

Section: Mathematics

Question : 66 of 160

Marks: +1, -0

−

∧

−3

∧

and

−

∧

−

∧

,then find the angle between the vectors 2

−

and

−

cos−1(
36
√42×35
)
cos−1(
72
√24×32
)
cos−1(
52
√74×65
)
cos−1(
24
√18×32
)
None of the above

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