Mathematics
Senior High
ここから、どう計算したら√3/2になるか分かりません!
△ABCで余弦定理より、
tol B
8+6+4√3+2-4 12 + 4√/52
2√2-2-√6 + √2
413+1
4 (3+√3)
4√5 (√6 + (1)
√3(
2 (√3+1)
4/15 (√6 + [F)
[I]
√(√6 + √I)
a=2√2
cos B =
30°
(√6 +√2)²+(2√2)²-2²
2.(√6 +√2).2√2
4(3+√3)
4√2 (√6 + √2)
=2 √√3
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