1. Find the value of tan15°tan20°tan7°tan75°?
a. 0
b. 2
c. 1
d. 3
2. Find the value of tan (55°−θ) − cot (35°+ θ)?
a. 0
b. 3
c. 2
d. 5
3. If cos 9α = sin α, then find the value of α?
a. 3°
b. 5°
c. 8°
d. 9°
4. If tan θ =√3, find the value of sec θ?
a. 3
b. 2
c. 5
d. 6
5.
a. sinα
b. sin β
c. cos α
d. cosβ
6. If Cos A+Cos2 A=1, then find the value of Sin A+Sin2 A=1?
a. 2
b. 3
c. 1
d. 0
7. If sin A + 2 cos A = 1, then find the value of 2 sin A – cos A?
a. 5
b. 3
c. 2
d. 1
8. If sin A + Sin2 A = 1 then find the value of Cos2 A+Cos2 A?
a. 3
b. 2
c. 5
d. 1
9. If x cos A = 1 and tan A = y, then find the value of x²− y²?
a. 2
b. 1
c. 3
d. 5
10. If sinθ + cosθ = √2cosθ then find the value of cos θ – sin θ?
a. √2sinθ
b. √3sinθ
c. √5sinθ
d. √12sinθ

Chapter - 8 Introduction to Trigonometry Quiz-3 | Math Class 10th

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