atan(1.5/(sqrt(3)/2)) - atan(0.5/(sqrt(3)/2)) makes wrong substraction

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A triaged calculator project exported from code.google.com/p/chromey-calculator

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atan(1.5/(sqrt(3)/2)) - atan(0.5/(sqrt(3)/2)) makes wrong substraction #263

Open FabriceNeyret opened 2 years ago

FabriceNeyret commented 2 years ago

atan(1.5/(sqrt(3)/2)) - atan(0.5/(sqrt(3)/2)) doesn't give the correct result, while computing separately the 2 atan() then substracting give the correct result.