MCQ Practice – Class 6 to 10

Q1. A man sees the top of a tree at angle of elevation 30°. Height is found using:

A. sin 30° B. cot 30° C. tan 30° D. cos 30°

Q2. If height = opposite side and distance = adjacent side, the correct ratio is:

A. cosec θ B. sin θ C. cos θ D. tan θ

Q3. Height of tower seen at angle 60° from 20 m:

A. 20√3 B. 10√3 C. 60 D. 20

Q4. If tan θ = height/base, then base =

A. tan θ ÷ height B. height ÷ tan θ C. height + tan θ D. height × tan θ

Q5. Angle of elevation from 20 m away is 45°. Height of object?

A. 20 m B. 40 m C. 5 m D. 10 m

Q6. The angle formed by the line of sight with the horizontal when looking down is:

A. Angle of depression B. Angle of elevation C. Both D. None

Q7. If angle of depression to a point is 30°, angle of elevation from that point to top is:

A. 30° B. 60° C. 90° D. 45°

Q8. Angle of depression of boat from lighthouse is measured from:

A. Horizontal line B. Vertical line C. Top of boat D. None

Q9. To find height using angle of elevation we use:

A. sec B. tan C. sin D. cos

Q10. If the angle of elevation increases, the distance between observer and object:

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

Quiz – Applications of Trigonometry