Iain’s car has run out of petrol. He walks $12$12 km west and then $9$9 km south looking for a petrol station.
If he is now $h$h km directly from his starting point, find the value of $h$h.
Consider the following figure.
Consider the following trapezium.
Consider the following diagram.
Use trigonometric ratios and Pythagoras’ theorem in two and three dimensions
Apply geometric reasoning in solving problems
Apply right-angled triangles in solving measurement problems