Page 55 - Ebook Trigonometri_Krisna Hasugian_MESP 2019
P. 55

PHASE SHIFT


               The phase shift for the tangent works the same way as the sine and cosine
                                                                                     
               function. Consider the graph of the function    = tan (   −  )
                                                                                  2

























                                                                                                          
               The blue is the function    = tan    and the green is the function    = tan (   −  ).
                                                                                                        2
                                                                                                         
               Notice that the functions appear the same except    = tan (   −  ) is shifted
                                                                                        2             2
               units to the right.

               VERTICAL SHIFT


               Again this works the same for tangent as it did for sine and cosine. Consider the

               graph of the function    = tan    + 1




























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