Question: A surveyor measures two sides and the included angle of a triangular tract of land to be a = 31.96 m, b = 47.25 m,

A surveyor measures two sides and the included angle of a triangular tract of land to be a = 31.96 m, b = 47.25 m, and C = 64.09°. 

(a) Show that a formula for the area A of the tract is A = 1/2ab sin C.

(b) Find the area of the tract.

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