MCQ Practice – Class 6 to 10

Q1. Height h = d tan 30°. tan 30° equals:

A. √3 B. 1 C. 1/√3

Q2. Height of tower seen at angle 60° from 20 m:

A. 10√3 B. 60 C. 20√3 D. 20

Q3. In heights & distances problems, we generally assume:

A. Horizontal ground B. Uneven ground C. Inclined ground D. Curved ground

Q4. Height of a tower = 50 m. Angle of elevation from point P is 30°. Distance =

A. 25 B. 50/√3 C. 50 m D. 50√3

Q5. The angle of elevation of the top of a tower increases when the observer:

A. Moves away from tower B. Moves closer to tower C. Moves downward D. Moves upward

Q6. 'Height' always refers to:

A. Base length B. Vertical distance C. Horizontal distance D. Slant height

Q7. Measuring angle of elevation requires:

A. Compass B. Protractor C. Ruler D. Theodolite

Q8. If height increases but distance stays same, angle of elevation:

A. Increases B. Becomes zero C. Remains same D. Decreases

Q9. Angle of elevation of top of pole changes from 30° to 60° when person moves:

A. Downward B. Toward pole C. Upward D. Away from pole

Q10. When angle of depression from top is 45°, horizontal distance =

A. height B. None C. height/2 D. 2 × height

Quiz – Applications of Trigonometry