\(\tan 29,7^\circ = \frac \Rightarrow {\rm A}{\rm N} = \frac{{\tan 29,7^\circ }}\)

\(\tan 41,2^\circ = \frac \Rightarrow B{\rm N} = \frac{{\tan 41,2^\circ }}\)

AN – BN = \(\frac{{\tan 29,7^\circ }} - \frac{{\tan 41,2^\circ }} = TN\left( {\frac{1}{{\tan 29,7^\circ }} - \frac{1}{{\tan 41,2^\circ }}} \right)\)

AB = TN.0,61

⇔ 1500 = TN.0,61

⇔ TN = 2455,4 (m).