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    amplitude, period, and phase shift of the function

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    Show how certain problems can be worked. Please see the attached file.

    1) Find the exact value of the sine, cosine, and tangent of the number, without using a calculator. -13π/4
    sin (-13π/4) =
    cos (-13π/4) =
    tan (-13π/4) =

    2) Find sin (t), cos (t), tan (t) when the terminal side of an angle of t radians in standard position passes through the given point. (-2,7)
    sin (t) =
    cos (t) =
    tan (t) =

    3) State the amplitude, period, and phase shift of the function.
    h(t)= -5cos(2t-π/9)
    (amplitude)=
    (period)=
    (phase shift)=

    4) If an investment of $2000 grows to $2621.59 in four years with interest compounded annually, what is the interest rate? (Round your answer to one decimal place.)
    ______%

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    https://brainmass.com/math/graphs-and-functions/amplitude-period-and-phase-shift-of-the-function-395371

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    This solution clearly assesses the amplitude, period, and phase shift of the function.

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