Trig Equations

Solving equations involving trigonometric functions and understanding solution domains

Want a deeper conceptual understanding? Try our interactive lesson! (Plus Only)

Exercises

No exercises available for this concept.

Key Skills

Solving trig equations algebraically in specific domain

AHL AI 3.8

When we have a trig equation where the argument to the trig function is of the form ax+b, we need to find the domain of ax+b using the domain of x. For example, if 0≤x<2π and we have sin(2x+2π)=1, then

2⋅0+2π≤2x+2π<2⋅2π+2π

therefore

2π≤2x+2π<29π