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Trigonometric l...

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  • Question 1
    4 / -1

    The number of values of χ in [0, 2π] satisfying the equation 3 cos 2χ - 10 cos χ + 7 = 0 is

  • Question 2
    4 / -1

    { χ ϵ R : cos 2χ + 2 cos2 χ = 2} is equal to

  • Question 3
    4 / -1

    If cos χ ≠ - (1/2) , then solutions of cos χ + cos 2χ + cos 3χ = 0 are

  • Question 4
    4 / -1

    The number of solutions of sin χ = sin 2χ between -(π/2) and π/2 is

  • Question 5
    4 / -1

    The number of solutions of the pair of equations 2 sin2 θ - cos 2θ = 0 and 2 cos2 θ - 3 sin θ = 0 in the interval [0, 2π] is

  • Question 6
    4 / -1

    The number of solutions of the equation 1 + sin χ sin2 χ/2 = 0, in [-π, π] is

  • Question 7
    4 / -1

    Number of solutions of y = eχ and y = sin χ is

  • Question 8
    4 / -1

    If sin 3θ = sin θ, how many solutions exists such that 0 < θ < 2π ?

  • Question 9
    4 / -1

    The equations 3 sin2 χ + 10 cos χ - 6 = 0 is satisfied, if

  • Question 10
    4 / -1

    The general value of θ is the equation cos θ = 1/√2, tanθ = - 1 is

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