Cindy is some distance NW from a building Don is some distance due North the same building. If Don is twice as far as Cindy from the building and they are 40m apart, calculate their distances to the building to the nearest one-tenth of metre.

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Oh the pythagoras theorem ? But then I don't know the other 2 sides whats the point of it then ?

a*arcsin(45) = 40m

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