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Let present age of father and son be 8x and 5x respectively. According to question, => (8x – 3) (5x – 3) = 45 × (5x – 3) => (8x – 3) = 45 => 8x = 48 => x = 6 Therefore, son’s age 4 years ago = (5x – 4) = 26 years
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 ...
