Answer:
27.7°
Step-by-step explanation:
To find m<A, apply trigonometric function.
Reference angle = A
Side length opposite to A = 20
Hypotenuse = 43
Apply SOH, which is:
[tex] Sin (A) = \frac{Opp}{Hyp} [/tex]
Plug in the values
[tex] Sin (A) = \frac{20}{43} [/tex]
[tex] A = sin^{-1}(\frac{20}{43}) [/tex]
A ≈ 27.7° (nearest tenth)
