Question help please

Question

A day on a distant planet observed orbiting a nearby star is 41.9 hr.41.9 hr. Also, a year on the planet lasts 89.7 Earth days.89.7 Earth days. In other words, for the purposes of unit conversion, there are 24 hr in a day, 60 min in an hour, and 60 s in a minute, as it would for astronomers on Earth observing the planet.

Calculate the average angular speed of the planet about its own axis of rotation in radians per second, with the second as measured on Earth.

Answer 1

[2π Radians Per Day] Turned By The Planet About Its Axis Of Rotation

Divided By [41.9 Hours Per Day Times 3600 Seconds Per Hour]

Reduces To (2π ÷ 41.9 ÷ 3600) Or 4.165463609E-05 Radians Per Second,

Equivalent To 4.165 Hundred Thousandths Of A Radian Per Second.