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## Homework Statement

An RAAF Roulette aeroplane is performing a low fly over at an air show. Under the current wind conditions its top speed is 450 km/hour, and it will fly directly over the crowd at an altitude of only h=340metres approaching from the North. When the aeroplane is only x=180metres horizontally from a person in the crowd looking North, how fast are they rotating their head upwards to keep the aeroplane in the centre of their vision?

You should neglect the height of the person in your calculations. Give your answer in radians per second, either exactly or correct to three decimal places.

## Homework Equations

would I need to use pythagoras to solve this?

Does this mean that dx/dt is 450?

Any help would be much appreciated