#On the name of ALLAH #Author : Fouad Teniou #Date : 24/07/08 #versionl :2.4 import math as m import re #################################################################################################### # Degree measure: There are 360 degrees in an angle of one revolution. # Degrees are divided into 60 minutes and minutes are divided into 60 seconds. # Radian measure: 360 degrees is equal to 2(Pi) radians and 180 degrees is equal to Pi(3.14159rad) # Sine, Cosine ,Tangent , Cosecant, Secant, and Cotangent are trigonometric functions which could be # calculated for a given angle . #################################################################################################### class Pycol: def __init__(self,other,name='',value=0) #Initialize self.other = other self.name = name self.value = value def switch(self): cable = {30:(chr(244)+'/6'), 45:(chr(244 )+'/4'),60:( chr(244 )+ '/3'), 90:(chr(244)+'/2'), 120 :('2'+chr(244)+'/3'),135 :('3'+ chr(244) +'/4'), 150:('5'+chr(244)+'/6'), 180:(chr(244)),270:('3'+chr(244)+'/2'),360:('2'+chr(244))} #Make a dictionary if cable.has_key(self.other): #Step through rest and fetch dictionary values by their keys return cable [self.other] #Return Keys values def __mul__(self}: return self.value * self.other def __repr__(self): #test and Print if self.__class__.__name__ == "Degrees" or self.__class__.__name__ == "Radians": return ("\n %s(%s) = %s" % (self.__class__.__name__,self.__class__.__name__,self.other,self.__class__.__name__,str(Pycol.switch(self)[:]),self.compute)) else: return ("\n \d+)\.(\d*)", str("%2.2f" % self.other)) b = re.match(r"(?P\d+)\.(\d*)", "%2.2f" % float(str(float(a.group(2))*0.6))) c = re.match(r"(?P\d+)\.(\d*)", "%2.2f" % float(str(float(b.group(2))*0.6))) if Pycol.switch(self): print ('\n\t\t\t' + str(self.other)+ " deg" +" = " + a.group(1)+chr(248)+' '+b.group(1)+"'"+ ' '+ c.group(1)+'"'+"=" +("%2.5f" % float(Pyeol.__mul__(self)))+"rad"+" <--> "+ str(Pycol.switch(self)[:])) else: print ('\n\t\t\t' + str(self.other)+ " deg"+" = " + a.group(1)+chr(248)+' '+b.group(1)+"'"+' ' + c.group(1)+'"'+" = " +("%2.5f" % float(Pycol.__mul__(self)))+"rad") class Radians(Pycol): #Inherit def __init__(self,other): Pycol.__init__(self,other,'Degrees', 180/m.pi) #Run Pycol init def adapt(self): a = re.match(r"(?P\d+)\.(\d*)" , str( "%2.2f" % float(Pycol.__mul__(self)))) b = re.match(r"(?P\d+)\.(\d*)" ,"%2.2f" % float(str(float(a.group(2))*0.6))) c = re.match(r"(?P\d+)\.(\d*)" , "%2.2f" % float(str(float(b.group(2))*0.6))) print ('\n\t\t\t' + "%2.5f" % float(str(self.other)) + " rad" + " = "+"%2.2f" % float(Pycol.__mul__(self))+ " deg"+" = " + a.group(1)+chr(248)+' '+b.group(1)+"'"+'' +c.group(1)+ '"') class sin(Degrees): #Inherit def __init__(self,other}: Degrees.__init__(self,other) if self.other % 180 == 0 :#sin(X)=sin(X + 2Pi)=sin(X-2Pi),sin(0)=sin(180)=... self.compute = 0.0 else: self.compute = m.sin(Pycol.__mul__(self)) # sin(X)=Side opposite(X)/hypotenuse #X: given angle in degrees class sec(sin): def __init__(self,other): Degrees.__init__(self,other) if m.sqrt((1-((m.sin(Pycol.__mul__(self))**2)))) == 0: #sin**2(X) +cos**2(X)=1 self.compute = 'Division by Zero indefinebale' #Obtained from applying Theorem of Pythagoras else: #and using the sin(X) and cos(X) defInitions self.compute = 1/m.cos(Pycol.__mul__(self)) # sec(X)=1/cos(X) class cos(sec): def __init__(self,other): #Inherit Degrees.__init__(self,other) if self.other %90 == 0 and self.other %180 !=0:#cos(X)=cos(X +2Pi)=cos(X-2Pi),cos(90)=cos(270) =... self.compute = 0.0 else: self.compute = m.cos(Pycol.__mul__(self))# cos(X)= side adjacent to (X)/hypotcnus class csc(cos): def __init__(self,other): Degrees.__init__(self,other) if m.sqrt((1-((m.cos(Pycol.__mul__(self))**2)))) == 0: self.compute = 'Division by zero indefineable' else : self.compute = 1/m.sin(Pycol.__mul__(self)) #csc(X)= 1/sin(X) class tan(csc): def __init__(self,other}: Degrees.__init__(self,other) if self.other % 180 == 0 : self.compute = 0.0 elif m.sqrt((1-((m.sin(Pycol.__mul__(self))**2)))) == 0: # sin**2(X) +cos**2(X)=1 self.compute = 'Division by zero indefinebale' # Obtained from applying Theorem of Pythagoras else: #and using the sin(X} and cos(X) definitions self.compute = m.sin(Pycol.__mul__(self))/m.cos(Pycol.__mul__(self)) #tan(X)=sin(X)/cos(X) class cot(tan): def __init__(self,other): Degrees.__init__(self,other) if m.sqrt((1-((m.cos(Pyco1.__mul__(self))**2))))==0: # sin**2(X) +cos**2(X)=1 self.compute = 'Division by zero indefinebale' elif self.other %90 ==0 and self.other % 180 !=0: self.compute = 0.0 else: self.compute =1/(m.sin(Pycol.__mul__(self))/m.cos(Pycol.__mul__(self))) #cot(X)= 1/tan(X) if __name__ == '__main__': for i in (0,30,45,60,90,120,135,150,180,270,360): a = Degrees (i) print a a.adapt() b = Radians (6.283185307) print b b.adapt() for i in range(0,105,15): print sin(i) print cos(i) print tan(i) print csc(i) print sec(i) print cot(i) ---------------------------------------------------------------------------------- #alternatively students can use DOS and run the following # if __name__=='__main__""" instead of the above to compute their trigonometric # functions or converting methods if __name__ =='__main__': while 1: y=raw_input("\nPlease enter the function's name,'sin,cos,tan,sec,csc,cot'\nor a converting method 'deg,rad'\nor any key to exit\n") x=raw_input("Please enter the angle's value.\n") if y=='deg': a = Degrees(float(x)) a.adapt() elif y=='rad': a = Radians(float(x)) a.adapt() elif y=='sin': print sin(int(x)) elif y=='cos': print cos(int(x)) elif y=='tan': print tan(int(x)) elif y=='sec': print sec(int(x)) elif y=='csc': print csc(int(x)) elif y=='cot': print cot(int(x)) else: break