oni0n
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| Joined: 04 Nov 2012 |
| Total Posts: 2975 |
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| 01 Jan 2016 01:50 AM |
^^
#code cout << "Proof by analogy is fraud." << endl; //Bjarne Stroustrup |
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oni0n
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| Joined: 04 Nov 2012 |
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| 01 Jan 2016 01:52 AM |
If the two of them join to make a circular pattern, and 1/2 circle + 1/2 circle = whole circle, why is it that Cosine is off by a bit, while Sine is not?
#code cout << "Proof by analogy is fraud." << endl; //Bjarne Stroustrup |
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cntkillme
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| Joined: 07 Apr 2008 |
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| 01 Jan 2016 02:12 AM |
Circle equation: x^2 + y^2 = r^2
When r = 1: x^2 + y^2 = 1
If you draw a right triangle, cos(angle) = adj/hyp and sin(angle) = opp/hyp hyp = radius = 1, so cos(angle) = x and sin(angle) = y
cos^2(angle) + sin^2(angle) = 1 This will help: mathsisfun.com/algebra/trig-interactive-unit-circle.html |
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oni0n
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| Joined: 04 Nov 2012 |
| Total Posts: 2975 |
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| 01 Jan 2016 03:15 AM |
thanks frond
#code cout << "Proof by analogy is fraud." << endl; //Bjarne Stroustrup |
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