Mathematics
Senior High
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三角比の相互関係を使う面積を求める式です
b=3.c=8.A=45°です
sin45°は1/√2なのに、波線のようになるのはなぜですか?
339 (1) S
S=besin
A = 1.3-8sin 45°
12121.3.8. =6√2
√2
2
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