Class 10 Maths Chapter 9 Some Applications Of Trigonometry Quiz 2 (25 MCQs)

Quiz Instructions

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1. When the angle of elevation of the sun is 78 degrees, an statue casts a shadow that is 6m long. What trig function would you use to determine how the top of the statue is from the end of its shadow?
2. You know two angles and one side of a triangle. What law should you use?
3. Line joining an eye and the object to be viewed is called
4. The angle of elevation and angle of depression represent which angle pair formed by parallel lines cut by a transversal?
5. It is given that the gradient of a straight road is $\frac{1}{9}$
6. The height of a tree is square root 3 times the length of its shadow. Find the angle of elevation of the sun
7. In a right triangle, what is true of angles A and B?
8. The pitch of a sound wave is primarily determined by its:
9. If height of the tower = shadow of the tower, then angle of elevation is
10. The speed of sound in air is approximately:
11. A person is looking at the top of a building at an angle of elevation of $45^\circ$
12. The angle of elevation of the top of a tower from a point on the ground which is 30 m away from the foot of the tower is 30, then height of tower is
13. The length of the shadow of a 4 m high vertical pole on the level ground at an instant when the sun elevation is 60$^\circ$ is .....
14. If height and distance is same, then what will be the angle formed between horizontal line and line of sight
15. The ..... of an object can be determined with the help of trigonometric ratios.
16. Please select the correct solution cot$^{ 2 }$x + 1 =$^{ }$
17. What is the saying we use to remember the trig functions?
18. What is the ratio for cosine of an angle?
19. A flagpole casts a shadow of 15 meters when the angle of elevation of the sun is $60^\circ$
20. The upper part of a tree, broken over by the wind, makes an angle of 45$^{o}$ with the ground and the distance from the root to the point where the top of the tree touches the ground is 15 m. At What height above the ground the tree is broken .
21. If the height of tower is half the height of the flagstaff on it and the angle of elevation of the top of the tower as seen from a point on the ground is 30, then the angle of elevation of the top of the flagstaff as seen from the same point is
22. When the angle of elevation of the sun is 78 degrees, an statue casts a shadow that is 6m long. How far is the top of the statue to the end of its shadow?
23. Express the true bearing 330$^\circ$ as compass bearing.
24. Why wouldn't you use SOH-CAH-TOA in a triangle with no right angle?
25. If SinA=1/2 and CosA=1/2 then A+B is equal to: