by **RusselB** » Wed Nov 27, 2019 10:25 pm

Welcome to the Forums.

What is it you are trying to calculate? The lengths of each side, the area, or something else.

You state that you know Angle A is 40 deg., then you are (somehow) concluding that the other two angles must be 50 and 90. How are you coming to that conclusion? From the fact that one angle is 40, you know that the sum of the other two angles is 140, but it could be 1 &139, or 70 & 70 ... there is nothing in the information given that can be used to determine just what those other two angles are.

OpenOffice 4.1.7 and LibreOffice 6.3.3.2 on Windows 7 Pro & Ultimate

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