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musiclover10045

4.

cos (angle) = Adjacent leg / hypotenuse

Cos(30) = Y / 16

Y = 16 * cos(30)

Y = 8√3

5.

cos(angle) = Adjacent Leg / hypotenuse

cos(Y) = 55/75

y = Arccos(55/75)

Y = 42.833 degrees.  (Round answer as needed)