In right triangle DEF, we have angle E = 90 degrees and tan D = 4*sin D. What is sin F?
F
E D
tan D = 4 sin D
EF / DE = 4 EF / FD
1/ DE = 4 / FD
FD = 4 DE
sin F = DE / FD
sin F = DE / ( 4 DE)
sin F = 1 / 4
