Did this video help you?
Transformations of Trigonometric Functions (Edexcel A Level Maths: Pure)
Revision Note
Transformations of Trigonometric Functions
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
Examiner Tip
- Always sketch with a pencil and draw a smooth curve.
- When you sketch the transformation of a graph, be sure to indicate the new coordinates of any points that are marked on the original graph.
- Try to indicate the coordinates of points where the new graph intersects the axes.
Worked example
You've read 0 of your 5 free revision notes this week
Sign up now. It’s free!
Did this page help you?