1SIN(3M) SIN(3M)
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6 sin, cos, tan, asin, acos, atan, atan2 - trigonometric functions
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9 #include <math.h>
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11 double sin(x)
12 double x;
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14 double cos(x)
15 double x;
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17 double asin(x)
18 double x;
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20 double acos(x)
21 double x;
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23 double atan(x)
24 double x;
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26 double atan2(x, y)
27 double x, y;
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30 Sin, cos and tan return trigonometric functions of radian arguments.
31 The magnitude of the argument should be checked by the caller to make
32 sure the result is meaningful.
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34 Asin returns the arc sin in the range -π/2 to π/2.
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36 Acos returns the arc cosine in the range 0 to π.
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38 Atan returns the arc tangent of x in the range -π/2 to π/2.
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40 Atan2 returns the arc tangent of x/y in the range -π to π.
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43 Arguments of magnitude greater than 1 cause asin and acos to return
44 value 0; errno is set to EDOM. The value of tan at its singular points
45 is a huge number, and errno is set to ERANGE.
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48 The value of tan for arguments greater than about 2**31 is garbage.
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52 SIN(3M)