?? sin.3m
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.TH SIN 3M .SH NAMEsin, cos, tan, asin, acos, atan, atan2 \- trigonometric functions.SH SYNOPSIS.B #include <math.h>.PP.B double sin(x).br.B double x;.PP.B double cos(x).br.B double x;.PP.B double asin(x).br.B double x;.PP.B double acos(x).br.B double x;.PP.B double atan(x).br.B double x;.PP.B double atan2(x, y).br.B double x, y;.SH DESCRIPTION.I Sin, cosand.I tanreturn trigonometric functions of radian arguments.The magnitude of the argument should be checkedby the caller to make sure the result is meaningful..PP.I Asinreturns the arc sin in the range \-\(*p/2 to \(*p/2..PP.I Acosreturns the arc cosine in the range0 to \(*p..PP.I Atanreturns the arc tangent of.I xin the range \-\(*p/2 to \(*p/2..PP.I Atan2returns the arc tangent of.I x/yin the range \-\(*p to \(*p..SH DIAGNOSTICSArguments of magnitude greater than 1cause.I asinand.I acosto return value 0;.I errnois set to EDOM.The value of.I tanat its singular points is a huge number, and.I errnois set to ERANGE..SH BUGSThe value of.I tanfor arguments greater than about 2**31 is garbage.?? 快捷鍵說(shuō)明
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