Answer:
tan (∠x) = yz/yx
Step-by-step explanation:
Tangent is opposite over hypotenuse (or in unit circle case sin∅/cos∅)
If this is the case, then the opposite side of ∠x would be segment yz and the adjacent side of ∠x would be segment yx. Then you put your answer as tan (∠x) = yz/yx
