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smmwaite

Answer

D. (b cosC,  b sinC)


Explanation

The vertex A is a point and the coordinate of a point are given by (x, y).

cos = adjacent/hypotenuse

cosC = x/b

b cosC = x

x = b cos C

sin = opposite/hypotenuse

sinC = y/b

b sinC = y

y = b sinC



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