Ask a New Question

Question

A 60m long bridge has an opening in the middle and both sides open up to let boats pass underneath. The two parts of the bridge floor rise up to a height of 18 m. Through what angle do they move?
8 years ago

Answers

Steve
Draw a diagram. You will see that

sinθ = 18/30

Extra credit: How wide a ship can pass through the opening?
8 years ago

Related Questions

A bridge that was 5.0m long has been washed out by the rain several days ago. How fast must a car be... A bridge is 70m long. From the ends of the bridge the angles of depression of a point on a river und... A bridge is 28 meters long. Find the length of a scale model if the scale is 1 cm = 5.5 meters. Roun... A bridge is 200 m long. A car weighing 2.5 metric tons is 50 m from one end of the bridge and a truc... A bridge 30 m long crosses a chasm. If the bridge is inclined at angle of 20 degrees to the horizont... A bridge is 140m long.From the ends of the bridge, the angles of depression of a point on the river... A bridge 100m long weighs 500kN. A lorry weighing 100kN is 25m from one end of it. Find the force ex... A bridge 100m long is to be built to span a valley as shown. From point a, the angle of depression i... Wine goes bad soon after opening because the ethanol (CH3CH2OH) dissolved in it reacts with oxygen... Horatius at the Bridge A long time ago, the king of the ancient country of Etruria attacked the cit...
Ask a New Question
Archives Contact Us Privacy Policy Terms of Use