Lighthouse

Author:R. Shawver, Sham

Here is a classic question, given the height of a lighthouse (PQ) , the bearings of two ships and the respective angle of depression, can you find the distance between the two ships (ST)?

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רישום חופשי
အခြေခံ data အခေါ်အဝေါ်များ
The black friday GeoGebra :)
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The Cosine Formula - Proof Without Words

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arctan(1)+arctan(2)+arctan(3)=pi
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