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Mathematics lessons for IB® Diploma Programme

Analysis and Approaches | Geometry and Trigonometry

Can You Solve a Trig Equation?


  • Students will solve basic multi-step trigonometric equations within a finite interval.
  • Students will review and use trigonometric identities to help in the solving of trigonometric equations.
  • Students will try to make a connection with how to understand these topics in IB Mathematics courses and on their final assessments.


  • Finite Interval
  • Identity
  • Verify
  • Radian

About the lesson

In this activity, students will practice how to solve equations involving trigonometric functions within a finite interval. Starting with basic two-step equations and then progressing to equations involving the use of trigonometric identities, students will review how to solve these equations both analytically and graphically. By the end of the activity, students will then apply this trig equation solving knowledge to real world situations.

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