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    Trigonometric functions

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    For zero degrees < x < ninety degrees, how many solutions are there for the equation
    2sin x = cos x

    © BrainMass Inc. brainmass.com February 24, 2021, 2:09 pm ad1c9bdddf
    https://brainmass.com/math/trigonometry/working-trigonometric-functions-4216

    Solution Preview

    2sinx=cosx
    sinx/cosx=1/2
    tanx=1/2
    x=arctan(1/2)
    tanx is a strictly increasing function on the interval 0<x<90
    so there is only ...

    Solution Summary

    This determines the number of solutions of a trigonometric equation.

    $2.19

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