The trigonometric equation is $\"\"$ .

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Compare the equation to basic quadratic equation $\"\"$

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Here $\"\"$

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Solution for basic quadratic equation $\"\"$ .

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Substitute corresponding values in above formula.

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$\"\"$

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$\"\"$

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$\"\"$

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$\"\"$

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$\"\"$

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$\"\"$

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$\"\"$

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$\"\"$

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