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...
Practical Applications

Measuring Heights and Distances

Using Trigonometry for Measurement

Trigonometry allows you to measure heights or distances that are hard to reach directly. By measuring an angle and a baseline, you can use trig ratios to calculate unknown lengths.

How It Works

  • Stand a known distance from the object.
  • Measure the angle of elevation or depression.
  • Use sine, cosine, or tangent to find the unknown side.

This method is used by surveyors, engineers, and even hikers!

Examples

  • Finding the height of a building by measuring your distance from it and the angle to the top.

  • Calculating the width of a river without crossing it using a measuring tape and a protractor.

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