Trigonometry

Hong Kong

Stage 1 - Stage 3

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`.

Easy

Approx a minute

Consider the following figure.

Consider the following trapezium.

Consider the following diagram.

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