# Trig

 Sum of angles in a Triangle  180 Complementary Angle  total 90 degrees Supplementary Angle total 180 degrees Acute Angle >0 but < 90 Obtuse Angle Strait Angle Right Angle 45-45-90 Triangle 1. the two legs are equal 2. Hypotenuse is the lengh of either side 30-60-90 Triangle 1. longer leg is sqrt.3 times lengh of shorter leg 2.hypotenuse is 2 timeslenght of shorter leg Equilaterial Triangle equal sides Isoscoles Triangle Scalene Triangle no equal sides the 6 trig function names sine cosine tangentrecipricalscosecant secant cotangent sin=  cos=  tan= sin= y/r  cos=x/r  tan= y/x csc=  sec= cot= csc= r/y   sec= r/x   cot= x/y Sin 0 degrees 0 Sin 30 degrees 1/2 Sin 45 degrees sqrt 2/2 Sin 60 degrees sqrt 3/2 Sin 90 degrees 1 Cos 0 degrees 1 cos 30 degrees sqrt 3/2 cos 45 degrees sqrt 2/2 Cos 60 degrees 1/2 cos 90 degrees 0 Tan 0 degrees 0 tan 30 degrees 1/ sqrt 3 tan 45 degrees 1 tan 60 degrees sqrt 3 tan 90 degrees undefined Authorswitch2002 ID194862 Card SetTrig DescriptionTrig Updated2013-02-09T21:44:10Z Show Answers