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The answer should be 19.4° but for some reason I just cannot get it!

Please help me with the steps!

I solved for time by using: x = xi + vit + (1/2)at^2

I got t = 1.13s

Then i used x = vt to solve for velocity in the y direction. vy = 27.5 m/s (which does not seem right)

Then cos θ = adj/hyp which gives me a math error :/