# 4.1 and 4.2

 What is an angle in standard position? Which way do the positive angles rotate? - vertex must be at origin- initial side must be on the x- axis- counter clockwise What is a coterminal angle? two or more angles that terminate in the same place What is the sum of complements and supplements? C: 90S: 180 What is the formula for radian measure? where theta is the central angle, s is the length of the intersected arc, and r is the radius What is the relationship between degrees and radians? 360o= 2or 180o= pi What is the formula for finding length of the circular arc? Theta must be in radians. So you have to convert it first by doing pi/ 180. What is the formula for angular speed? What is the formula for linear speed? , where t is time What are the six trig functions? sine= y/r csc=r/ycos= x/r sec= r/xtan= y/x cot= x/y What is the domain of sine and cosine? Range? domain: all real numbersrange: the set of real numbers from -1 to 1 inclusive What are the only two even trig functions? cos and sec What are the reciprocal identities? sin= 1/ csccos= 1/ sectan= 1/ cotcsc= 1/ sinsec= 1/ coscot= 1/ tan What are the quotient identities? tant= sint/ costcott= cost/ sint What are the pythagorean identities? sin2t+ cos2t= 11+ tan2t= sec2t1+ cot2t= csc2t How do you find periodic properties of sine and cosine? sin = sintcos ()= cost What are the periodic properties of tangent and cotangent? AuthorDesLee26 ID128127 Card Set4.1 and 4.2 DescriptionSeniors =( Updated2012-01-16T14:35:47Z Show Answers