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02ps-05 The Bay Of Syracuse Solution

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    Well, let's see. I have a right triangle here.
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    I need to know now how can I figure out what this width is?
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    Well, the side I know is the opposite side.
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    The side I want to know is this one here--the width.
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    Now, that's the adjacent side to this angle. It's not the hypotenuse.
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    Okay, so which trig function relates opposite and adjacent?
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    Well, that's the tangent.
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    So, I'm going to be using the tangent of this angle.
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    I'm going to calculate that, because I know that it has to equal the opposite side
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    over the adjacent side, which is the width.
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    Okay, not so bad.
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    Now I have to solve this for width, which means I have to bring this over here
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    and put this guy down there, which gives me width equals 25 m/tan(1.3°).
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    When I plug that in, I like to use Google's calculator,
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    I get a length of 1100 meters.
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    Now, this is really an incredible tool.
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    We use basic trigonometry to make a real calculation.
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    This is truly how you could have calculated the width of the mouth of the bay of Syracuse. Good work.
Title:
02ps-05 The Bay Of Syracuse Solution
Video Language:
English
Team:
Udacity
Project:
PH100 - Intro to Physics
Duration:
01:06
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English subtitles

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