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Math Help - Heavily confused by bracket use in trig ratios

  1. #1
    Senior Member Paze's Avatar
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    Heavily confused by bracket use in trig ratios

    It seems to me that brackets are randomly thrown around when talking Sin, Cos and Tan.

    For example, now I have a problem in my book that states an equation: 0.7sin100\pi t how am I to understand this?

    As 0.7sin(100\pi t) or 0.7sin(100)\pi t ??
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  2. #2
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    Re: Heavily confused by bracket use in trig ratios

    From experience, arguments of trigonometric functions often have the form n\pi x, so I would say it's 0.7\sin(100\pi t). However, omitting parentheses does not give credit to the authors of the book. See this thread by an engineer with a Ph.D. turned high school teacher.
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    Senior Member Paze's Avatar
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    Re: Heavily confused by bracket use in trig ratios

    Thanks. I'll go with that then. I agree on his post, I always write parentheses myself to avoid confusion.
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