digital calculator

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upadrony
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Joined: Fri Dec 03, 2010 9:28 pm

digital calculator

Post by upadrony »

How does a calculator find trigonometric ratios? Hello, I have a graphing calculator and when I find SIN(40), for example, it gives me a number. What I know about SIN is that it equals Opposite/Hypotenuse, so how does the calculator figure it out if it has no information about the Hypotenuse or the Opposite? I don't understand where it obtains those long numbers from?
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Last edited by upadrony on Sat Dec 11, 2010 5:31 pm, edited 1 time in total.
gullfo
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Re: digital calculator

Post by gullfo »

have you tried searching for this information on http://www.bing.com or http://www.google.com? or even http://mathworld.wolfram.com?

please read the rules regarding posting including updating your profile.
Glenn
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