At my math exam i got this picture of a piamide.(adsbygoogle = window.adsbygoogle || []).push({});

Now the question was to calculate the angle made by [tc] and the square (abcd)

how much is that angle?

my thougth was 37°45' and some "

can you help me, with a calculation?

the pictur is an attachement and also can be found @ http://www.flagcreator.be/pyramide.png [Broken]

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# 3D Geometrie

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