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त्रिकोणमिति का परिचय

Question

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

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

equals space fraction numerator cos squared 27 degree plus sin squared 27 degree over denominator sin squared 73 degree plus cos squared 73 degree end fraction

[∵ sin²A + cos²A = 1]

equals space 1 over 1 equals 1