Help with this Question
An aircraft takes off from an airport 2 hrs before sunset . The pilot flies a track of 90 T , W/V 130/20 , TAS 100kts . In order to return to the point of departure before sunset , furthest distance which maybe traveled is :
a. 84 nm
b. 97 nm
c. 105 nm
d. 111 nm
somehow i am not able to figure out a way to approach this quest any help will be appreciated .
Thanks