+333 \(\frac{6csc(20)}{13csc(0)-5}=0\)
Let's simplify \(6csc(20)=17.5\)to 3 significant figures
\(csc(0-5)=csc(-5)\)
\(13csc(-5)=-149\)to 3 significant figures
\(\frac{17.5}{-149}\neq 0 \)Maybe if you wrote the whole decimal out it might equal zero but if we're simplifiying to 3 significant figures, it does not equal zero.
