Height and distance
The angle made by the line through his eyes and top of the tree with the line parallel to the ground is called the angle of elevation. The angle formed by the line joining the object and the eye of the observer with the horizon is called the angle of depression.
Summary
The angle made by the line through his eyes and top of the tree with the line parallel to the ground is called the angle of elevation. The angle formed by the line joining the object and the eye of the observer with the horizon is called the angle of depression.
Things to Remember
When the observer looks at an object above him, the angle formed by the line joining the object and the eye of the observer with the ground or parallel to the ground is called the angle of elevation.
When an observer observes an object below him, the angle formed by the line joining the object and the eye of the observer with the horizon is called the angle of depression.
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Subjective Questions
Q1:
Which was the first great civilization originated in the heart of the Arabian peninsula?
Type: Short Difficulty: Easy
Q2:
What is called as the cradle of civilization?
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Q3:
Who built the hanging gardens of Babylon?
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Q4:
Who are called historians?
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Q5:
Write the countries that consisted in the Mesopotamian Empire.
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Q6:
Where was the Mesopotamian Civilization originated?
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Q7:
What was the Babylon?
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Q8:
Who built the Hanging Garden of Babylon?
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Height and distance
Angle of Elevation
In the figure given below, a man, standing on the ground in front of a tree, is looking at the top of the tree. The angle made by the line through his eyes and top of the tree with the line parallel to the ground is called the angle of elevation.
When the observer looks at an object above him, the angle formed by the line joining the object and the eye of the observer with the ground or parallel to the ground is called the angle of elevation.
Angle of depression
When an observer observes an object below him, the angle formed by the line joining the object and the eye of the observer with the horizon is called the angle of depression.
In the figure given below a man, on the rooftop of the house, is looking a car parked on the roadside in front of his house. He finds an angle made by the line through his eye and the point of the car with the horizon. Such angle is called the angle of depression.
Lesson
Trignometry
Subject
Compulsory Mathematics
Grade
Grade 10
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