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निम्न का मान ज्ञात कीजिए-
`(2 sin ^(2)60^(@)+1+2sin ^(2)27^(@))/(3cos ^(2)17^(@)-2+cos ^(2)73^(@))`

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यहाँ `(2sin ^(2)63^(@)+1+2sin ^(2)73^(@))/(3cos ^(2)17^(@)-2+3cos ^(2)73^(@))=(2[sin ^(2)63^(@)+sin ^(2)(90^(@)-63^(@))]+1)/(3[cos ^(2)17^(@)+cos ^(2)(90^(@)-17^(@))]-2)`
`=(2[sin^(2)63^(@)+cos^(2)63^(@)]+1)/(3[cos ^(2)17^(@)+sin ^(2)17^(@)]-2)=((2xx1)+1)/((3xx1)-2)=3`

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