s1=vo²*sin2α/g
s2=vo²*sin4α/g
s1/s2=3=sin2α/sin4α
sin4α=2*sin2α*cos2α
cos2α=1/6
α=(arccos(1/6))/2=40°
=======================
Copyright © 2024 SCHOLAR.TIPS - All rights reserved.
Answers & Comments
Verified answer
s1=vo²*sin2α/g
s2=vo²*sin4α/g
s1/s2=3=sin2α/sin4α
sin4α=2*sin2α*cos2α
cos2α=1/6
α=(arccos(1/6))/2=40°
=======================