52° and 30°
Since both triangles are right use the appropriate trig. ratio
(20)
sin ? = [tex]\frac{opposite}{hypotenuse}[/tex] = [tex]\frac{26}{33}[/tex]
? = [tex]sin^{-1}[/tex]([tex]\frac{26}{33}[/tex] = 52° ( nearest degree )
(22)
cos ? = [tex]\frac{adjacent}{hypotenuse}[/tex] = [tex]\frac{20}{23}[/tex]
? = [tex]cos^{-1}[/tex]([tex]\frac{20}{23}[/tex]) = 30° (nearest degree )
