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लि... cos* 60°)AS ? 60°~ cos® 450LStan’ 60t- |
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Answer» 4(sin⁴30°cos⁴60°)-2/3(sin²60°-cos²45°)+1/2tan²60° =4{(1/2)⁴(1/2)⁴}-2/3{(√3/2)²-(1/√2)²}+1/2(√3)² =4(1/16)*(1/16)-2/3(3/4-1/2)+3/2 =1/64-2/3(1/4)+3/2 =1/64+3/2-1/6 =97/64-1/6 =259/192 Like my answer if you find it useful! |
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