Answer
$A = 49˚$
Work Step by Step
1. Find the height of the triangle, Let $x = $ height of the triangle
$sin(30) = \frac{x}{6}$
$x = 6sin(30)$
by GDC / calculator
$x = 3.0$ units
2. Find $A$
$sin(A) = \frac{3}{4}$
$A = sin^{-1}(\frac{3}{4})$
by GDC / calculator
$A = 48.5903...˚$
$A = 49˚$