Math, asked by khushikhandelwalbki, 9 months ago

if cos inverse x/a + cos inverse x/b = alpha. prove that x square/ a square - 2xy/ab (cos alpha) + y square/ b square = sin square alpha

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Answered by Anonymous

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but cos inverse x/a + cos inverse x/b ≠ alpha

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if cos inverse x/a + cos inverse x/b = alpha. prove that x square/ a square - 2xy/ab (cos alpha) + y square/ b square = sin square alpha​

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but cos inverse x/a + cos inverse x/b ≠ alpha

if cos inverse x/a + cos inverse x/b = alpha. prove that x square/ a square - 2xy/ab (cos alpha) + y square/ b square = sin square alpha