20. In AABC, mZA = 40, AB = 10, and AC=8. To the nearest tenth, what is BC? %3D

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A: Given

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A: I am attaching image so that you understand each and every step.

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Q: 4 to 6

A: All the parts are interconnected.

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A: Note: A segment midpoint divides the segment into two congruent segments. 

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A: We can find the scale factor and corresponding congruent angles as below

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A: Given, Two triangle, Consider ∆HVZ and ∆VYX,  Also from the figure, We can see that.  

Q: 30 10. 25.4 15 8.

A: Let's find. 

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Q: 5.) Find the missing value to the nearest hundredth. 5 sin 12 3D 3D 3D 3D

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A: