MEDIUM
10th CBSE
IMPORTANT
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If the length of shadow of a vertical pole equals its actual height, then angle of elevation of sun is 45°.

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Important Questions on Some Applications of Trigonometry

MEDIUM
10th CBSE
IMPORTANT
Modern's abc+ of Mathematics for Class 10>Chapter 9 - Some Applications of Trigonometry>FOR ASSESSMENT>Q 7
If a man standing on a platform 4 metres above the surface of a lake observes a cloud and its reflection in the lake, then the angle of elevation of the cloud equals the angle of depression of its reflection.
HARD
10th CBSE
IMPORTANT
Modern's abc+ of Mathematics for Class 10>Chapter 9 - Some Applications of Trigonometry>FOR ASSESSMENT>Q 8
The angle of elevation of the top of a tower is 60°. If the height of the tower is doubled, then the angle of elevation of its top will also be doubled.
HARD
10th CBSE
IMPORTANT
Modern's abc+ of Mathematics for Class 10>Chapter 9 - Some Applications of Trigonometry>FOR ASSESSMENT>Q 9
If the height of the tower and the distance of the point of the observation from its foot, both are increased by 20%, then the angle of elevation does not change.
HARD
10th CBSE
IMPORTANT
Modern's abc+ of Mathematics for Class 10>Chapter 9 - Some Applications of Trigonometry>FOR ASSESSMENT>Q 10
The angle of elevation of the top of a tower is 60°. If the height of the tower is halved, then the angle of elevation of its top will also be halved.
EASY
10th CBSE
IMPORTANT
Modern's abc+ of Mathematics for Class 10>Chapter 9 - Some Applications of Trigonometry>FOR ASSESSMENT>Q 1
The angle formed by the line of sight with the horizontal when it is above the horizontal level is called the angle of _____.
MEDIUM
10th CBSE
IMPORTANT
Modern's abc+ of Mathematics for Class 10>Chapter 9 - Some Applications of Trigonometry>FOR ASSESSMENT>Q 3
If the length of the shadow of a tree is k times its height, then the angle of elevation is 30°. Here, the value of k is _____.
MEDIUM
10th CBSE
IMPORTANT
Modern's abc+ of Mathematics for Class 10>Chapter 9 - Some Applications of Trigonometry>FOR ASSESSMENT>Q 4
If the sun's altitude decreases, then the length of shadow of a tower _____ .
MEDIUM
10th CBSE
IMPORTANT
Modern's abc+ of Mathematics for Class 10>Chapter 9 - Some Applications of Trigonometry>FOR ASSESSMENT>Q 5
A pole is being broken by the wind at one of its points of trisection, then the top struck the ground at an angle of _____°.