標題:
發問:
Q1) The gradient of a road is 1:20. After walking 50m along the road, what is the horizontal distance travelled? Q2) The angle of inclination of a road is 15 degree. If the gradient is 1:n , find n.
最佳解答:
let the inclination of road be A degree tan A=1/20 horizontal distance =50cos A=50x20/√401=49.93m 2008-03-07 21:44:29 補充： 1) let the inclination of road be A tan A=1/20 horizontal distance =50cos A=50x20/√401=49.93m 2) tan 15°=1/n n=3.73
其他解答:
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gradient發問:
Q1) The gradient of a road is 1:20. After walking 50m along the road, what is the horizontal distance travelled? Q2) The angle of inclination of a road is 15 degree. If the gradient is 1:n , find n.
最佳解答:
let the inclination of road be A degree tan A=1/20 horizontal distance =50cos A=50x20/√401=49.93m 2008-03-07 21:44:29 補充： 1) let the inclination of road be A tan A=1/20 horizontal distance =50cos A=50x20/√401=49.93m 2) tan 15°=1/n n=3.73
其他解答:
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