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Hi there! 

So, it's a fairly non-complicated problem. 

tan(1125) = tan(\frac{1125}{360}) = tan(3\frac{45}{360})

Knowing that, we can ignore three, full, 360' circles, what interests us is the remaining angle, which is 45'

We know, from the trigonometric chart, that: 


Therefore, the answer is: 


All the best! 

5 4 5
Tan(360x3 + 45) ~ tan 45 =1
2 3 2