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Why one trig equation can have several answers

Why one trig equation can have several answers

Graph of y = sin(x - 30°) and y = 0.3 showing two intersections between 0° and 360°

A trigonometric equation can have several answers because sine, cosine, and tangent repeat. In this topic, angles are in degrees, so put your calculator in degree mode and always watch the stated solution interval.

10.4 Solving Trigonometric Equations Lesson

  1. A Level
  2. /Maths
  3. /10.4 Solving Trigonometric Equations

Step-by-step lessons covering Edexcel A Level Maths 10.4 Solving Trigonometric Equations for A Level Maths. Each lesson works through exam-style questions in Paper 1, Paper 2 and Paper 3 format. Build fluency with the core pure algebra and calculus toolkit early, since almost every mechanics and statistics topic on the course depends on it.

Lessons