Question

I need help

Answer 1

http://prntscr.com/culwkj

Answer 2

tan (39 45)=(F+L)/x,
tan (theta)=L/x

Answer 3

from first euqation, solve for F+L, from scond solve for L

Answer 4

wait for the first part how can we change degree to decimal?

Answer 5

@Astrophysics

Answer 6

I forgot about that a long time ago, never used that again after my middle school math exams