10/sin15=x/sin60,x是根号几
问题描述:
10/sin15=x/sin60,x是根号几
答
10/sin15°=x/sin60°
x=10sin60°/sin15°
x=5√3/{(√6-√2)/4} (sin15°=sin(45°-30°)=sin45°cos30°-cos45°sin30°)
x=15√2+5√6