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\begin{aligned}\cos \left(5.0^{\circ}\right) &=\frac{T_{\mathrm{L} x}}{T_{\mathrm{L}}} \\T_{\mathrm{L} x} &=T_{\mathrm{L}} \cos \left(5.0^{\circ}\right) \\\cos \left(5.0^{\circ}\right) &=\frac{T_{\mathrm{R} x}}{T_{\mathrm{R}}} \\T_{\mathrm{R} x} &=T_{\mathrm{R}} \cos \left(5.0^{\circ}\right)\end{aligned}