Math, asked by qazwsxedcr6718, 7 months ago

If sin 49 = 0.75 then the value of cos ( - 581 )

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Answered by rajeevr06

1

Answer:

$\cos( - 581) = \cos(581) = \cos(360 + 221) = \cos(221) = \cos(270 - 49) = - \sin(49) = - 0.75$

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