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Some Applications Of Trigonometry

Question

Wired Faculty App

Evaluate:
$fraction numerator sin squared 63 degree plus sin squared 27 degree over denominator cos squared 17 degree plus cos squared 73 degree end fraction.$

Solution

fraction numerator sin squared left parenthesis 90 degree minus 27 degree right parenthesis plus sin squared 27 degree over denominator cos squared left parenthesis 90 degree minus 73 degree right parenthesis plus cos squared 73 degree end fraction

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[Using sin² A + cos² A = 1]

space equals space 1 over 1 equals 1

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