The angle of elevation of a jet plane from a point A on the ground is 60^{0.}After a flight of 15 sec,the angle of elevation changes to 30^{0}.If the jet plane is flying at a height of 1500 root 3 m,find the speed of the jet plane.

From the top of the building 60m high the angle of depression of the top and bottom of a vertical lamp post are observed to be 30 degree and 60 degree respectively find

a)the distance between the building and the lamp post

b)the height of the lamp post

The angle of elevation of a jet fighter from point A on the ground is 60°.After a flight of 15 seconds, the angle of elevation changes to 30°.If the jet is flying at a speed of 720 km/h, find the constant height at which jet is flying.

If the angle of elevation of a cloud from a point h metres above a lake is alpha and the angle of depression of its reflection is beta. Prove that the height of cloud is h(tan beta + tan alpha)/ tan beta - tan alpha

The angle of elevation of a cloud from a point 60m above the lake is 30 and the angle of depression of its reflection in the lake is 60.find the height of the cloud above the lake?

A man standing on the deck of a ship, which is 10m above the water level, observes the angle of elevation of the top of a hill as 60 degree and the angle of depression of the base of the hill as 30 degree. Find the distance of the hill fom the ship and the height of the hill.

The Angle of elevation of th top of a vertical tower from a point on the ground is 60^{o.}From another point 10m vertically above the first, its angle of elevation is 30^{o.}Find the height of tower? ...................Please provide me answer as soon as possible....

given the length of a string between a kite and a point on the ground is 93.5 m.If the string makes an angle theta with the level ground such that tan theta is 15 by 8 .Then the height of the kite is????

The angle of elevation of the top Q of a vertical tower PQ from point X on the ground is 60 degree.At a point Y 40m vertically above X the angle of elevation is 45 degree .Find the height Of the tower PQ and distance XQ.

sin4a - cos4a = 2sin2a-1 = 1 - 2 cos2a

the angles of depression of the top and bottom of an 8m tall building from the top and bottom of a multistoreyed buildin are 30 and 45 degrees respectively. find the height of the multistoreyed building and the distance between the twoo buildings. please anser me fast today is my test.

A peacock is sitting on the top of a tree. It observes a serpent on the ground making an angle of depression of 30degree .The peacock with the speed of 300m/minute catches the serpent in 12seconds. What is the height of the tree?

the angles of elevation of the top of a tower from two points at a distance of 4m and 9m from the base of the tower and in the same straight line with it are complementary. prove that the height of the tower is 6 m

A boy standing on a horizontal plane finds a bird flying at a distance of 100m from

him at an elevation of 30

0. A girl standing on the roof of 20 meter high building finds the angle of elevation of the same bird to be 450. Both the boy and the girl are on opposite sides of the bird. Find the distance of the bird from the girl.

From the top of a hill the angle of depression of the two consecutive kilometre stones due to east are found to be 30^{o} and 45^{o}.Find the height of a hill.

FROM THE TOP OF A TOWER 50M HIGH THE ANGLES OF DEPRESSION OF THE TOP AND THE BOTTOM OF A POLE ARE OBSERVED TO BE 45DEGREE AND 60DEGREE RESPECTIVELY. FIND THE HEIGHT OF THE TOWER

An Isosceles triangle of wood is placed in a vertical plane,vertex upwards ,and faces the sun .If 2a be base of the triangle ,h its height and 30^{o} the altitude of the sun then the tangent of the angle at the apex of the shadow is?Ans=[2ah(inroot)3]/3h^{2}-a^{2}

In a flight of 600 km , an aircraft was slowed down due to bad weather. The average speed for the trip was decreased by 200 km/h & the time of flight increased by 30 minutes. Find the duration of flight.

Sin^{4 }+ Cos^{4} = 1 - 2Sin^{2}Cos^{2}

a ladder rests against a vertical wall at an inclination of alpha to the horizontal.its foot is pulled away from the wall through a distance p so that its upper end slides a distance q down the wall and then the ladder makes an angle of beta to the horizontal show that

p/q= cos beta - cos alpha/ sin alpha -sin beta

The shadow of a tower,standing on level ground,is found to be 45m longer when sun's altitude is 30^{0 }than when it was at 60^{0}.Find the height of the tower.

i need help

The angle of elevation of a jet plane from a point A on the ground is 60

^{0.}After a flight of 15 sec,the angle of elevation changes to 30^{0}.If the jet plane is flying at a height of 1500 root 3 m,find the speed of the jet plane.From the top of the building 60m high the angle of depression of the top and bottom of a vertical lamp post are observed to be 30 degree and 60 degree respectively find

a)the distance between the building and the lamp post

b)the height of the lamp post

The angle of elevation of a jet fighter from point A on the ground is 60°.After a flight of 15 seconds, the angle of elevation changes to 30°.If the jet is flying at a speed of 720 km/h, find the constant height at which jet is flying.

If the angle of elevation of a cloud from a point

hmetres above a lake isalphaand the angle of depression of its reflection isbeta. Prove that the height of cloud ish(tan beta + tan alpha)/ tan beta - tan alpha^{0}– 4a). Find the distance that the airplane must fly to be directly above the treeI asked this question but replay mail image is not come in the answer coulmn

The angle of elevation of a cloud from a point 60m above the lake is 30 and the angle of depression of its reflection in the lake is 60.find the height of the cloud above the lake?

are 60

^{o} and 30^{o} respectively. Find the vertical distance between the two planes.A man standing on the deck of a ship, which is 10m above the water level, observes the angle of elevation of the top of a hill as 60 degree and the angle of depression of the base of the hill as 30 degree. Find the distance of the hill fom the ship and the height of the hill.

The Angle of elevation of th top of a vertical tower from a point on the ground is 60

^{o.}From another point 10m vertically above the first, its angle of elevation is 30^{o.}Find the height of tower? ...................Please provide me answer as soon as possible....given the length of a string between a kite and a point on the ground is 93.5 m.If the string makes an angle theta with the level ground such that tan theta is 15 by 8 .Then the height of the kite is????

The angle of elevation of the top Q of a vertical tower PQ from point X on the ground is 60 degree.At a point Y 40m vertically above X the angle of elevation is 45 degree .Find the height Of the tower PQ and distance XQ.

sin4a - cos4a = 2sin2a-1 = 1 - 2 cos2a

the angles of depression of the top and bottom of an 8m tall building from the top and bottom of a multistoreyed buildin are 30 and 45 degrees respectively. find the height of the multistoreyed building and the distance between the twoo buildings. please anser me fast today is my test.

A peacock is sitting on the top of a tree. It observes a serpent on the ground making an angle of depression of 30degree .The peacock with the speed of 300m/minute catches the serpent in 12seconds. What is the height of the tree?

the angles of elevation of the top of a tower from two points at a distance of 4m and 9m from the base of the tower and in the same straight line with it are complementary. prove that the height of the tower is 6 m

A boy standing on a horizontal plane finds a bird flying at a distance of 100m from

him at an elevation of 30

0. A girl standing on the roof of 20 meter high building finds the angle of elevation of the same bird to be 450. Both the boy and the girl are on opposite sides of the bird. Find the distance of the bird from the girl.

From the top of a hill the angle of depression of the two consecutive kilometre stones due to east are found to be 30

^{o}and 45^{o}.Find the height of a hill.FROM THE TOP OF A TOWER 50M HIGH THE ANGLES OF DEPRESSION OF THE TOP AND THE BOTTOM OF A POLE ARE OBSERVED TO BE 45DEGREE AND 60DEGREE RESPECTIVELY. FIND THE HEIGHT OF THE TOWER

An Isosceles triangle of wood is placed in a vertical plane,vertex upwards ,and faces the sun .If 2a be base of the triangle ,h its height and 30^{o}the altitude of the sun then the tangent of the angle at the apex of the shadow is?Ans=[2ah(inroot)3]/3h^{2}-a^{2}In a flight of 600 km , an aircraft was slowed down due to bad weather. The average speed for the trip was decreased by 200 km/h & the time of flight increased by 30 minutes. Find the duration of flight.

Sin

^{4 }+ Cos^{4}= 1 - 2Sin^{2}Cos^{2}a ladder rests against a vertical wall at an inclination of

to the horizontal.its foot is pulled away from the wall through a distancealphapso that its upper end slides a distanceqdown the wall and then the ladder makes an angle ofbetato the horizontal show thatp/q= cos beta - cos alpha/ sin alpha -sin betaThe shadow of a tower,standing on level ground,is found to be 45m longer when sun's altitude is 30

^{0 }than when it was at 60^{0}.Find the height of the tower.i need help