Mathematics
Senior High

解説のところの波線がついているところがなぜそうなるか分かりません。途中計算がみたいです

(1) (tan-sin)²+(1-cos0)² = ( 1 cose -1)²
2 1) = (Tane- tano coso)² + (1-coso) ² = tan ²0 (1-coso)² + (1 -coso) ² 2 = (1 + tan ²0 )( 1-cose) ² 2 1 COS²0 1 ={coso ( よって、左辺と右辺 (1 - (1 - cos 0)² = (-1000 (-coso :) ² 2 -1)²

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