answer the following questions in paper with proper writing
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Bro 13 ko replace krke 23 kr dena
Bro 13 ko replace krke 23 kr dena
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cos2 67° - sin2 23°
cos( 90°-23°) - sin2 23°
sin2 23° -sin2 23°
=0
cos( 90°-23°) - sin2 23°
sin2 23° -sin2 23°
=0
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