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Answer 1

Explanation:

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Answer 2

U = 67.6 degrees

Explanation:

Since this is a right triangle, we can use trig functions

cos U = adj side / hypotenuse

cos U = sqrt(10)/ sqrt(69)

cos U = sqrt(10/69)

Taking the inverse cos of each side

cos ^-1( cos U) = cos ^-1(sqrt(10/69))

U = 67.62335

To the nearest tenth

U = 67.6 degrees