✨ Best Answer ✨
sin60°=√3/2
sin45°=1/√2
正弦定理より、
2√3/sin60°=b/sin45°
⇔b=sin45°×2√3/sin60°
=1/√2×2√3×2/√3=4/√2=2√2
✨ Best Answer ✨
sin60°=√3/2
sin45°=1/√2
正弦定理より、
2√3/sin60°=b/sin45°
⇔b=sin45°×2√3/sin60°
=1/√2×2√3×2/√3=4/√2=2√2
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