EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR MATHEMATICS>Chapter 8 - Pair of Straight Lines>AP EAPCET 2021 (19-Aug Afternoon)>Q 21

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If the acute angle between lines $a x^{2} + 2 h x y + b y^{2} = 0$ is $\frac{π}{4}$ , then $4 h^{2} =$

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Important Questions on Pair of Straight Lines

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AP EAPCET

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR MATHEMATICS>Chapter 8 - Pair of Straight Lines>AP EAPCET 2021 (19-Aug Afternoon)>Q 22

The angle between the lines represented by

\cos θ (\cos θ + 1) x^{2} - (2 \cos θ + \sin^{2} θ) x y +

(1 - \cos θ) y^{2} = 0

is

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AP EAPCET

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EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR MATHEMATICS>Chapter 8 - Pair of Straight Lines>AP EAPCET - 20 Aug 2021 Forenoon>Q 23

The acute angle between lines

6 x^{2} + 11 x y - 10 y^{2} = 0

is