Tractors and Power Tillers

An agricultural tractor has a wheelbase of $l = 2.10\text{ m}$ and a front wheel track width of $w = 1.30\text{ m}$. When making a tight headland turn, the inner front steering wheel turns through an angle of $\theta_i = 35^\circ$. According to the ideal Ackermann steering condition ($\cot\theta_o - \cot\theta_i = \frac{w}{l}$), the ideal steering angle of the outer front wheel $\theta_o$ in degrees is ________ (round off to 1 decimal place).