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					Vocabulary                   Formula
Trig Ratios: SOHCAHTOA          Sine = opposite/hypotenuse
                                Cosine = adjacent/hypotenuse
                                Tangent = opposite/adjacent or
                                 sin/cos
Reciprocal of SOHCAHTOA       Cosecant =
                                  hypotenuse/opposite
                                  1/sin

                               Secant =
                                  hypotenuse/adjacent
                                  1/cos

                               Cotangent =
                                  adjacent/opposite
                                  cos/sin
                                  1/tan
SOHCAHTOA Table
                                    0     30      45      60      90
                                                  √2      √3
                              sin   0     ½          /2      /2   1
                                          √3      √2
                              Cos   1        /2     /2    ½       0
                                          √3
                              tan   0        /3   1       √3      undefined


Unit Circle                       ½ circle = π
                                  1 circle = 2π
DegreesRadians              Degree · π/180º
RadiansDegrees              Radian · 180°/π
Arc Length                   s=rø
Sector Area                  Area = ½ r2ø
Law of Sines                 SinA = SinB = SinC
-Applies to: AAS, ASA, ASS     a       b      c

Law of Cosines               a2= b2 + c2 - 2bccos<A
-Applies to: SAS, SSS
Area of a Triangle           Area = ½ · two sides · sine<between sides
Graphing                     y = a ± b·cos/sin (c) ± d
                                  a = center line
                                  b = amplitude
                                  cos/sin = either cosine or sine
                                  c = frequency
                                  d = shift
                             y = CL ± Amp·cos/sin(Freq)±Shift

				
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