Transformations of trigonometric functions

• You should already have a good idea about?translating,?stretching?and?reflecting?basic functions (see?Transformations of Functions)
• The basic principles are exactly the same for transforming any trigonometric graph
  • y?=?n?cos?x?gives a?vertical stretch or squash
  • y?= sin nx?gives a?horizonal stretch or squash
  • y?= tan (x?+ c) gives a?horizonal translation