3.3 Applications of Trigonometry

Key ideas

• The relationships between the length of the sides and the size of the angles in a triangle can be used to solve many problems involving position, distance, angles and area.

• I can use  right and non-right angled trigonometry, including Pythagoras’s theorem to solve various contextual problems.

• I can explain and solve problems related to angles of elevation and depression.

• I can construct labelled diagrams from written statements and use them to solve problems.