# Fill in the Blanks

## Chapter 9: Some Applications of Trigonometry

### Class 10

Fill in the blanks Mathematics Chapter 9: Some Applications of Trigonometry for Class 10th is very important as these type of questions help in scoring good marks. Fill in the blanks type questions are to be answered to the point and hence very helpful in overall scoring. Fill  in the blanks Type of questions helps students to think Critically on every aspects of life.

Here is a collection of few questions for CBSE Class 10th Term 2 Exams. These Fill in the blanks are fully solved.

#### Fill in the Blanks with suitable words or expressions.

Question.1.
The ____________ of an object viewed, is the angle formed by the line of sight with the horizontal when it is above the horizontal level, i.e., the case when we raise our head to look at the object.

angle of elevation

Question.2.
The __________ of an object viewed, is the angle formed by the line of sight with the horizontal when it is below the horizontal level, i.e., the case when we lower our head to look at the object.

angle of depression

Question.3.
In the adjoining figure, the positions of observer and object are marked. The angle of depression is ________

30^{0}

Question.4.
The __________ is the line drawn from the eye of an observer to the point in the object viewed by the observer.

line of sight

Question.5.
__________ are used to find height or length of an object or distance between two distant objects.

Trigonometric ratios

Question.6.
The top of a building from a fixed point is observed at an angle of elevation 60 and the distance from the foot of the building to the point is 100 m. then the height of the building is ____________.

100\sqrt{3}

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