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सिद्ध कीजिए कि - `sin^(2)24^(@)-sin^(2)6^(@)=(1)/(8)(sqrt5-1)` |
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Answer» बायाँ पक्ष `=sin^(2)24^(@)-sin^(2)6^(@)` `=sin (24^(@)+6^(@))sin(24^(@)-6^(@))=sin 30^(@) sin 18^(@)` `=(1)/(2)xx(sqrt5-1)/(4)=(1)/(8)(sqrt5-1) = ` दायाँ पक्ष |
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