TS EAMCET 9-Sep-2020 Shift 1 Solved Paper

Section: Mathematics

Question : 61 of 160

Marks: +1, -0

The combined equation for a pair of planes is
S≡2x2−6y2−12z2+18yz+2zx+xy=0. If one of the planes is parallel to
x+2y−2z=5, then the acute angle between the planes S = 0 is

Cos−1(
16
21
)
π
2
2π
3
Sin−1(
7
15
)

Validate

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