the correct one is the third one because when he asking you to find y first think to find y, you should look that 17 is the opposite y is the hypotenuse so this tell you to do sin because sin is opp over hyp so put sin(30)= 17 over y you ganna get y=34. do the same thing to x to find x you should look to x telling you to do the tangent, so tangent(30)=17/x you ganna get 17 and 3 under the square root. remember sin (30) is 1/2, tan(30) is 1/3 under the square root..
