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Math Help - Trigonometry

  1. #1
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    Trigonometry

    Trigonometry-untitled.png

    Please help ASAP, i hav my exam in 2 hours from now
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  2. #2
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    Quote Originally Posted by creatively12 View Post
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    Please help ASAP, i hav my exam in 2 hours from now
    a is the amplitude and c is the median value - both are easily obtained from the graph. The period is also easily obtained and you should know that period = 2pi/b (therefore solve for b).

    Substitute the values of a, b and c to get the rule for y. Then solve y = 0 for the smallest positive value of x.

    All of this stuff should be known well in advance of 2 hours before an exam.
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