Angle between the planes \overline{r} \cdot(12 \overline{i}+4 \overline{j}-3 \overline{k})=5 and \overline{r}. (5 \overline{i}+3 \overline{j}+4 \overline{k})=7 is [AP EAPCET 21 May 2024 Shift 2]

Correct Answer is : Cos−1(6√213)

{\Cos}^{-1} ( {6 \sqrt{2}}/{13})

{\Cos}^{-1} ( {3 \sqrt{2}}/{13})

Three Dimensional Geometry

Section: Mathematics

Question : 38 of 58

Marks: +1, -0

Angle between the planes r⋅(12i+4j−3k)=5 and r. (5i+3j+4k)=7 is

[AP EAPCET 21 May 2024 Shift 2]

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