Home
Class 10
MATHS
A man in a boat rowing away from light h...

A man in a boat rowing away from light house 100 m. He takes 2 minute to change the angle of elevation of the top of light house from `60^(@)" to "45^(@)`. What is the speed of the boat?

A

`5/(18)(3-sqrt(3))m//s`

B

`18/(5)(sqrt(3)-1)m//s`

C

`2.364 m//hr.`

D

`1.268 km//h`

Text Solution

Verified by Experts

Promotional Banner

Similar Questions

Explore conceptually related problems

A man in a boat rowing away from a light house 100 m high takes 2 minutes to change the angle of elevation of the top of the light house from 60° to 30°. Find the speed of the boat in meters per minute. [Use sqrt(3) = 1.732 )

A man in a boat rowed away from a cliff 150 m high takes 2 min, to change the angle from 60^(@) to 45^(@) . The speed of the boat is

A boat is being rowed away from a cliff 150 meter high. At the top of the cliff the angle of depression of the boat changes from 60^(@) to 45^(@) in 2 minutes. Find the speed of the boat.

At a point 15 m away from the base of a 15 m high house, the angle of elevation of the top is

At a point 15 m away from the base of a 15 m high house, the angle of elevation of the top is

The angle of elevation of the top of a tower from a point 20 m away from its base is 45^(@). What is the height of the tower?

From 40 m away from the foot of a tower , the angle of elevation of the top of the tower is 60^(@) .What is the height of the tower ?

80 m away from the foot of the tower, the angle of elevation of the top of the tower is 60^@ . What is the height (in metres) of the tower?