圆弧计算:弦长15.7m,弦高15m,半径9.55,求弧长?弦长0.6m,弦高0.6m,半径0.38m,求弧长?
来源:学生作业帮 编辑:作业帮 分类:数学作业 时间:2024/05/11 03:30:00
圆弧计算:弦长15.7m,弦高15m,半径9.55,求弧长?弦长0.6m,弦高0.6m,半径0.38m,求弧长?
帮我算下,我怎么算都错
帮我算下,我怎么算都错
弦长L=15.7m,弦高H=15m,求弧长C?
弧半径为R,弧所对的圆心角为A.
R^2=(R-H)^2+(L/2)^2
R^2=R^2-2*H*R+H^2+L^2/4
2*H*R=H^2+L^2/4
R=H/2+L^2/(8*H)
=15/2+15.7^2/(8*15)
=9.554m
A=2*ARC SIN((L/2)/R)
=2*ARC SIN((15.7/2)/9.554)
=110.498度
C=PI*R*A/180=PI*9.554*110.498/180=18.4256m
弦长L=0.6m,弦高H=0.6m,求弧长C?
弧半径为R,弧所对的圆心角为A.
R^2=(R-H)^2+(L/2)^2
R^2=R^2-2*H*R+H^2+L^2/4
2*H*R=H^2+L^2/4
R=H/2+L^2/(8*H)
=0.6/2+0.6^2/(8*0.6)
=0.375m
A=2*ARC SIN((L/2)/R)
=2*ARC SIN((0.6/2)/0.375)
=106.26度
C=PI*R*A/180=PI*0.375*106.26/180=0.6955m
弧半径为R,弧所对的圆心角为A.
R^2=(R-H)^2+(L/2)^2
R^2=R^2-2*H*R+H^2+L^2/4
2*H*R=H^2+L^2/4
R=H/2+L^2/(8*H)
=15/2+15.7^2/(8*15)
=9.554m
A=2*ARC SIN((L/2)/R)
=2*ARC SIN((15.7/2)/9.554)
=110.498度
C=PI*R*A/180=PI*9.554*110.498/180=18.4256m
弦长L=0.6m,弦高H=0.6m,求弧长C?
弧半径为R,弧所对的圆心角为A.
R^2=(R-H)^2+(L/2)^2
R^2=R^2-2*H*R+H^2+L^2/4
2*H*R=H^2+L^2/4
R=H/2+L^2/(8*H)
=0.6/2+0.6^2/(8*0.6)
=0.375m
A=2*ARC SIN((L/2)/R)
=2*ARC SIN((0.6/2)/0.375)
=106.26度
C=PI*R*A/180=PI*0.375*106.26/180=0.6955m
圆弧计算:弦长15.7m,弦高15m,半径9.55,求弧长?弦长0.6m,弦高0.6m,半径0.38m,求弧长?
弧长75m,弦长65.66m,如何计算弦高与半径?
已知,弦长7m,半径长1m, 求弧长
已知弦高0.5m看,弦长3m,半径2.5m,求弦面积
已知圆弧的弦长4m和弧高1.8m,求弧长
已知圆弧的弦长7m和弧高2.5m,求弧长
已知圆弧的弦长10m和弧高2.5m,求弧长
已知圆弧的弦长7m和弧高1m,求弧长
求弧长公式 弦长2.5m 高0.65m 求弧长
已知弦长5m,弦高0.5m,求弧长?
圆弧的半径是怎么求啊 已知弦长2m弦到弧的距离为0.8m求半径?
如图所示,固定的四分之一竖直圆弧轨道AB的半径R=0.6m,其最低点长L=2.0m,高h=0.2m