Trigonometry

Study of triangles and trigonometric functions including sine, cosine, and tangent.

Triangles and Their TypesTrigonometric Ratios: Sine, Cosine, TangentThe Unit Circle and Angle Measurement
Trigonometric IdentitiesSolving Triangles: The Laws of Sines and CosinesGraphs of Trigonometric Functions
Measuring Heights and DistancesNavigation and MappingEngineering and Design
Memorizing Key Formulas and RatiosSolving Trig Problems Step-by-StepVisualizing Problems with Sketches
Triangles and Their ...Trigonometric Ratios...The Unit Circle and ...Trigonometric Identi...Solving Triangles: T...Graphs of Trigonomet...Measuring Heights an...Navigation and Mappi...Engineering and Desi...Memorizing Key Formu...Solving Trig Problem...Visualizing Problems...
Study Strategies

Solving Trig Problems Step-by-Step

Systematic Approach

Read the problem carefully. Identify what you know (sides, angles) and what you need to find. Choose the right ratio or formula, set up the equation, and solve step by step. Double-check your answer by plugging it back into the original triangle.

Examples

  • Listing known and unknown values in a triangle before choosing a trigonometric ratio.

  • Checking your answer by making sure the calculated side lengths fit the triangle’s conditions.

Next
Visualizing Problems with Sketches