Answer:
Step-by-step explanation:
t = [tex]cos^{-1} (\frac{3}{5})[/tex]
t ≈ 53°
cos t = cos (- t) = [tex]\frac{3}{5}[/tex]
sec ( [tex]\pi[/tex] + t ) = - [tex]\frac{5}{3}[/tex]
