NCERT Class 10
The value of sin 45 degree + cos 45 degree is
25
Nov
The value of sin 45 degree + cos 45 degree is The value of sin 45 degree + cos 45 degree is November 25, 2020 Category: Chapter 8 - Introduction to Trigonometry , Maths , NCERT Class 10 ,
The value of tan 30°/cot 60° is
25
Nov
The value of tan 30°/cot 60° is The value of tan 30°/cot 60° is November 25, 2020 Category: Chapter 8 - Introduction to Trigonometry , Maths , NCERT Class 10 ,
The value of sin30° + cos30° – sin60° + cos60° is
25
Nov
The value of sin30° + cos30° – sin60° + cos60° is The value of sin30° + cos30° – sin60° + cos60° is November 25, 2020 Category: Chapter 8 - Introduction to Trigonometry , Maths , NCERT Class 10 ,
The lower window of a house is at a height of 2 m above the ground and its upper window is 4 m vertically above the lower window. At certain instant the angles of elevation of a balloon from these windows are observed to be 60° and 30°, respectively. Find the height of the balloon above the ground.
25
Nov
The lower window of a house is at a height of 2 m above the ground and its upper window is 4 m vertically above the lower window. At certain instant the angles of elevation of a balloon from these windows are observed to be 60° and 30°, respectively. Find the height of the balloon [...]
A window of a house is h metres above the ground. From the window, the angles of elevation and depression of the top and the bottom of another house situated on the opposite side of the lane are found to be α and β, respectively. Prove that the height of the other house is h (1 + tan α cot β) metres.
25
Nov
A window of a house is h metres above the ground. From the window, the angles of elevation and depression of the top and the bottom of another house situated on the opposite side of the lane are found to be α and β, respectively. Prove that the height of the other house is h [...]
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A window of a house is h metres above the ground. From the window ,
respectively. Prove that the height of the other house is h (1 + tan α cot β) metres. ,
the angles of elevation and depression of the top and the bottom of another house situated on the opposite side of the lane are found to be α and β ,
The angle of elevation of the top of a vertical tower from a point on the ground is 60°. From another point 10m vertically above the first, its angle of elevation is 45°. Find the height of the tower.
25
Nov
The angle of elevation of the top of a vertical tower from a point on the ground is 60°. From another point 10m vertically above the first, its angle of elevation is 45°. Find the height of the tower. its angle of elevation is 45°. Find the height of the tower. The angle of elevation [...]
A ladder rests against a vertical wall at an inclination α 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 β to the horizontal. Show that p/q = cosβ − cosα / sinα − sinβ
25
Nov
A ladder rests against a vertical wall at an inclination α 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 β to the horizontal. Show that p/q = cosβ − [...]
From the top of a tower h m high, the angles of depression of two objects, which are in line with the foot of the tower are α and β (β > α). Find the distance between the two objects.
25
Nov
From the top of a tower h m high, the angles of depression of two objects, which are in line with the foot of the tower are α and β (β > α). Find the distance between the two objects. From the top of a tower h m high the angles of depression of two [...]
The angle of elevation of the top of a tower 30 m high from the foot of another tower in the same plane is 60° and the angle of elevation of the top of the second tower from the foot of the first tower is 30°. Find the distance between the two towers and also the height of the other tower.
25
Nov
The angle of elevation of the top of a tower 30 m high from the foot of another tower in the same plane is 60° and the angle of elevation of the top of the second tower from the foot of the first tower is 30°. Find the distance between the two towers and also [...]
Prove that 1 + sec θ – tan θ / 1 + sec θ + tan θ = 1 – sin θ / cos θ
25
Nov
Prove that 1 + sec θ – tan θ / 1 + sec θ + tan θ = 1 – sin θ / cos θ Prove that 1 + sec θ - tan θ / 1 + sec θ + tan θ = 1 - sin θ / cos θ November 25, 2020 Category: Chapter [...]