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SubjectPaid lesson

TRIGONOMETRY (GRAPHS OF TRIGONOMETRICAL FUNCTIONS)

ClassNotes Team 4 MIN READUPDATED 13 JUL 2026

Mathematics SSS 3 First Term

WEEK 6

TRIGONOMETRY (GRAPHS OF TRIGONOMETRICAL FUNCTIONS)

Performance Objectives

Student should be able to:

Construct table of values for TRIGONOMETRY (GRAPHS OF TRIGONOMETRICAL FUNCTIONS), plot the graphs of the table of values and interpreting and reading out given values.

Content

Sine and Cosine Graphs

The diagram above shows how the sine and cosine graphs looks like but before we proceed to solving / plotting our graphs, it is important we note a few key points

  1. All values of sinθTRIGONOMETRY (GRAPHS OF TRIGONOMETRICAL FUNCTIONS) and cosθTRIGONOMETRY (GRAPHS OF TRIGONOMETRICAL FUNCTIONS) lie between +1 and – 1.
  2. The sine and cosine curves have the same wave shape but they start from different points.
  3. Each curve is symmetrical about its highest point / maximum point / peak and…