Question

How can I solve this question?

Answer 1

draw a rectangle triangle :

sin B=8/17 that means that de biggest side are 17 ("hipotenusa"), and another side is 8. Applying de theorem of pythagoras:

`17^(2) =8^(2) +x^(2) \\x^(2) =17^(2) -8^(2)\\x=\sqrt{17^(2) -8^(2)} \\x=5√(5)`