Question

find the value of (cos²27 + sin²73)?

Answer 1

HOLA

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$( \: cos {}^{2} 27 \: + \: sin {}^{2} 73\: ) \\ \\ \: cos \: ( \: 90 \: - 27 \: ) \: = \: sin63 \\ \\ \frac{sin {}^{2} 63}{sin {}^{2}7 3 } = \: 10$
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