The angle between the lines sin 2- y 2-2 xy cos 2-cos 2-1 x 2-0 isA- 90-B- -C- - - 2D- 12

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Complex Numbers

The angle bet...

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The angle between the lines $(s i n^{2} α) y^{2} - 2 x y c o s^{2} α + (c o s^{2} α - 1) x^{2} = 0$ is

90°

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