Trigonometric Identities | MCQs

    Q1: tanθ + cotθ = ______?

    • A. cosecθ
    • B. secθ
    • C. secθcosecθ
    • D. None of these

    Q2: The value of (1- secθ)(1+ secθ) is equal to .....

    • A. 2sec^3 θ
    • B. sec^2 θ
    • C. cos ^2 θ
    • D. tan^2 θ

    Q3: Which of the following is true? sin² 60⁰ + cos² 60⁰ = 1, sin² 45⁰ + cos² 45⁰ = 1, sin² 45⁰ − cos² 45⁰ = 0, All of these

    • A. sin² 45⁰ − cos² 45⁰ = 0
    • B. sin² 60⁰ + cos² 60⁰ = 1
    • C. sin² 45⁰ + cos² 45⁰ = 1
    • D. All of these

    Q4: If a line makes angles α, β, γ with coordinate axes, Find the value of sin^2 α + sin^2 β + sin^2 γ?

    • A. 4
    • B. 1
    • C. 3
    • D. 2

    Q5: Cos3a =______?

    • A. 3sina - 4sin^3a
    • B. 4cos^3a - 3cosa
    • C. 4sina - 3sin^3a
    • D. 3cos^3a - 4cosa

    Q6: sin^2 θ/2 =_______?

    • A. 1 - cos ^2 θ
    • B. cos^2 2θ
    • C. sec^2 2θ
    • D. 1 - cos ^2 θ/2

    Q7: cos^2 θ/2+sin^2 θ/2 =_____?

    • A. 2
    • B. 1/2
    • C. 1
    • D. 1/4

    Q8: sin²2θ = _____?

    • A. 1-cos²2θ
    • B. 1-cos²θ
    • C. 1+cosθ
    • D. 1+cos 2θ
✅ Correct: 0 | ❌ Wrong: 0 | 📊 Total Attempted: 0
iamge