10th Samacheer Quiz

Q1. If cos θ=12/13 for an acute angle, then tan θ is

5/12 12/5 5/13 13/5

Q2. sin²θ+cos²θ = ?

0 1 2 sinθ

Q3. What is sin 0°?

0 1 −1 1/2

Q4. A tower is observed from a point 20 m away at an angle of elevation 45°. Find its height.

10 m 20 m 30 m 40 m

Q5. What is tan 45°?

0 1 √3 1/√3

Q6. tan 45° = ?

0 1/2 1 √3

Q7. What is cot 45°?

0 1 √3 1/√3

Q8. cos 60° = ?

0 1/2 √3/2 1

Q9. Which identity is correct?

sin²θ+cos²θ=1 sinθ+cosθ=1 tan²θ−1=0 secθ+cosecθ=1

Q10. Simplify cosec²θ−cot²θ.

0 1 2 cosecθ

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