Farm Power

In the Ackermann steering mechanism of an agricultural tractor, the condition for correct steering around a curve without scrubbing is:

Options:

• (A) $\cot \theta_o - \cot \theta_i = \frac{c}{b}$
• (B) $\tan \theta_o - \tan \theta_i = \frac{c}{b}$
• (C) $\cot \theta_i - \cot \theta_o = \frac{c}{b}$
• (D) $\cos \theta_o - \cos \theta_i = \frac{c}{b}$