Je voudrais savoir comment me servir de tan-1, cos-1 et sin-1 en c++. Est-ce-que

Question

Bonjour,


Je voudrais savoir comment me servir de , cos-1sin-1 en c++. 
Est-ce-que quelqu'un peut m'aider?
SVP

Merci, d'avance.

Nico

niketou · Answer

#include <cmath>

atan( x )

deck_bsd · Answer

google est ton amis ne l'oublie jamais mdr :D :

http://www.cplusplus.com/ref/cmath/atan.html
et tant que on y ait :

http://www.cplusplus.com/ref/cmath/

C'est encore mieu ;)

++

wxccxw · Answer

sinon ya une fonction recherche sur le site !! plein de source ;) de plus la msdn peut aussi t'aider 
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/default.asp

wxccxw · Answer

Calculates the arctangent of x (atan or atanf) or the arctangent of y/x (atan2 or atan2f). double atan( double x ); float atan( float x ); // C++ only long double atan( long double x ); // C++ only double atan2( double y , double x ); float atan2( float y , float x ); // C++ only long double atan2( long double y , long double x ); // C++ only float atanf( float x ); float atan2f( float y , float x ); Parameters * x, y : Any numbers. Return Value atan returns the arctangent of x in the range of –p/2 to p/2 radians.atan2 returns the arctangent of y/x in the range –p to p radians. If x is 0, atan returns 0. If both parameters of atan2 are 0, the function returns 0. atan2 uses the signs of both parameters to determine the quadrant of the return value. Input | SEH Exception | Matherr Exception | ---- ± QNAN,IND, none, _DOMAIN Remarks The atan function calculates the arctangent of x. atan2 calculates the arctangent of y/x. atan2 is well defined for every point other than the origin, even if x equals 0 and y does not equal 0. atan has an implementation that uses Streaming SIMD Extensions 2 (SSE2). See _set_SSE2_enable for information and restrictions on using the SSE2 implementation. C++ allows overloading, so you can call overloads of atan and atan2. In a C program, atan and atan2 always take and return doubles. Requirements Routine | Required header | Compatibility | ---- atan, atan2, atanf, atan2f, , ANSI, Win 98, Win Me, Win NT, Win 2000, Win XP For additional compatibility information, see Compatibility in the Introduction. Libraries All versions of the C run-time libraries. Example // crt_atan.c // arguments: 0.5 5 #include #include #include int main( int ac, char* av[] ) { double x1, x2, y; if( ac != 3 ){ fprintf( stderr, "Usage: %s ", av[0] ); return; } x1 = atof( av[1] ); y = atan( x1 ); printf( "Arctangent of %f: %f ", x1, y ); x2 = atof( av[2] ); y = atan2( x1, x2 ); printf( "Arctangent of %f / %f: %f ", x1, x2, y ); } Output Arctangent of 0.500000: 0.463648 Arctangent of 0.500000 / 5.000000: 0.099669

Je voudrais savoir comment me servir de tan-1, cos-1 et sin-1 en c++. Est-ce-que

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