Mathematics
Senior High
数1の問題です
この計算式ってどういうことですか??
至急でよろしくお願いします🙇♀️🙇♀️
余弦定理により
c²=(√√6+√√2)²+22
-2(√6+√2) 2 cos 45°
=(6+2√12+2)+4
-4√2 (√3+1) √
=12+4√√3-4√√3-4
=8
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