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A spoke is one of some number of rods radiating from the center of a wheel (the hub where the axle connects), connecting the hub with the round traction surface. Since bicycle and wheelchair wheel spokes are only in tension, flexible and strong materials such as synthetic fibers, are also occasionally used. Metal spokes used in bicycles also increase the moment of inertia.
Two men are on opposite sides of a tower of 75 m height. If they measure the elevation of the top of the tower as 30deg; and 45deg; respectively then th...
A man 3 m tall is 19 m away from a tower 22 m high. Determine the angle of elevation of the top of the tower from the eye of the observer.
There are two houses of the same height on both sides of a 15-meter wide road. From a point on the road, elevation angles of the houses are 30° and 60�...
Rohit is climbing on a 30 metres long rope, which is tied from the top of a vertical pole to the ground. Find the height of the pole if the angle made b...
The angle of elevation of a ladder leaning against a wall is 60° and the foot of the ladder is 5 m away from the wall. The length of the ladder
A boat is being rowed away from a cliff 270 m high. From the top of the cliff, the angle of depression of the boat changes from 60° to 45° in 2 minute...
A shadow of a tower standing on level ground is found to be 40√3 meters longer when the Sun's altitude is 30° than when it is 60°. The height of the...
Due to a cyclone, a tree is broken and makes an angle of 30º with the ground. The distance between the root and the tip of the tree that touches the gr...
A pole 6 m high casts a shadow 2√3 m long on the ground. Find the angle of elevation
A boat is being rowed away from a cliff 240 m high. From the top of the cliff, the angle of depression of the boat changes from 60° to 45° in 3 ...