Applications of Trigonometry  
Summary 
many problems involving angles, distances and directions can be solved using trigonometry. trigonometric functions occur frequently in calculus and students should be able to deal with them quickly and efficiently. all of the formulae of trigonometry from the cosine rule through to the double angle formulae are available to help solve these problems. if the problem involves finding maximum and minimum values it may be necessary to differentiate. diagrams are also almost always of assistance when doing this type of problem.

Key Skills 
solve problems involving trigonometry using the full range of trigonometric formula and relationships.

Vocabulary 
trigonometric functions, differentiate, maximum, minimum, double angle formula. 