In this lesson we will learn how to calculate any angle in a right angled triangle using trigonometry. Rob takes you to the famous leaning tower of Pisa in Italy where you will calculate the angle of the leaning tower of Pisa using trigonometry. You will also learn how to use your calculator in these types of questions and how to use formula triangles to make this lesson even easier. You must be able to correctly label a triangle in trigonometry for you try this lesson. If not then watch the following lesson: How to label the triangle.

The question covered in this lesson is to calculate the missing angle $\ominus $

Area

Compound Areas

Surface Area

Volume

Circles

Circle Geometry (Higher Only)

Angles

Angles on Parallel Lines

Measuring Angles

Polygons

Properties of Shapes

Midpoints of Lines

3D Coordinates (Higher Only)

Converting Units of Length, Area and Volume

Similar Triangles and Similar Shapes (Higher Only)

Loci and Constructions

Bounds (Higher Only)

Converting Metric Units

Converting Imperial Units

Pythagoras Theorem

Right-angled Trigonometry

Non-right Angled Trigonometry (Higher Only)

3D Pythagoras (Higher Only)

3D Right-angled Trigonometry (Higher Only)

Bearings

Density

Congruence

Translations

Reflection

Rotation

Enlargements

Describing Single Transformations

Vectors