Precalculus, Chapter 6, 6.1, Section 6.1, Problem 43

Given: A=43^@45', b=57, c=85
Use the Area Formula A=1/2(b)(c)sin(A)
A=43^@45'=43.75^@
A=1/2(57)(85)sin(43.75)
A=1675.19
The area is 1675.19 squared units.