Answer:
[tex]cos=1[/tex]
Step-by-step explanation:
Use the acronym SOH-CAH-TOA
sin = [tex]\frac{3}{4}[/tex]
So opposite is 3 and hypotenuse is 4.
tan = [tex]\frac{-3}{4}[/tex]
So opposite is -3 and adjacent is 4.
cos = adjacent/hypotenuse
cos = [tex]\frac{4}{4}=1[/tex]