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| 1. |
4(sin²60-cos²45) /tan²30+cos²45 |
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Answer» =4×( 3
) 2 +3×( 3
1 ) 2 −8× 2
1 × 2
1
=4× 4 3 +3× 3 1 −8× 2 1
=3+1−4=0 |
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