30 lines
475 B
C
30 lines
475 B
C
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#include <stdio.h>
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#include <math.h>
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const float PI = 3.1415926535;
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double sinx(double x)
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{
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double Xn = x;
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double sum = 0.0;
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int i = 1;
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do
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{
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sum += Xn;
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Xn *= -1.0 * x * x / ((2 * i) * (2 * i + 1));
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i++;
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}
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while (fabs(Xn) > 0.0000001);
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return sum;
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}
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int main()
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{
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double x;
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scanf("%lf",&x);
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x *= PI/180.0;
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printf("sinx =%lf\tlibSin =%f",sin(x),sinx(x));
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//~ printf("%.3f",sinx(x));
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return 0;
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}
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