Answer:
sina = cosb = [tex]\frac{3}{5}[/tex]
Step-by-step explanation:
sina = [tex]\frac{opposite}{hypotenuse}[/tex] = [tex]\frac{9}{15}[/tex] = [tex]\frac{3}{5}[/tex]
cosb = [tex]\frac{adjacent}{hypotenuse}[/tex] = [tex]\frac{9}{15}[/tex] = [tex]\frac{3}{5}[/tex]
