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Required information

Problem $13\mathrm{.}006-$ Gear tooth geometry

A parallel helical gearset uses a $20-$tooth pinion driving a $36-$tooth gear. The pinion has a right$-$hand helix angle of

$20,$ a normal pressure angle of $25,$ and a normal diametral pitch of $4$ teeth$/$in$.$

Problem $13\mathrm{.}006.$c $-$ Transverse diametral pitch and the transverse pressure angle of a gearset

Find transverse diametral pitch and the transverse pressure angle for the given gearset.

The transverse diametral pitch is

$x$ teeth$/$in$.($Round the final answer to three decimal places.$)$

The transverse pressure angle is

$.$