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Math Help - Basic trigonometry

  1. #1
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    Basic trigonometry

    Please explain each step clearly. My test is tmr and you'll be a lifesaver =D

    1.
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  2. #2
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    for 1. if N=4 the d=4-2sin(3x+5).

    Assuming x is between 0 and 2pi, then sin(3x+5) can take maximum and minimum values of 1 and -1.

    Hence, d is between 2 and 6
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  3. #3
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    Quote Originally Posted by delicate_tears View Post
    Please explain each step clearly. My test is tmr and you'll be a lifesaver =D

    1.
    2. a) Substitute t = \frac{5}{6} and then solve.

    b) I assume this is a measurement of force... Let the equation equal 4 and solve for t, taking the last t value in the 5 second observation as your answer.
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