For finding x: We want to use tangent because tangent is opposite/adjacent tan (30)= x/15 Multiply both sides of the equation by 15 to isolate x Now we have, (15)(tan 30) = x Simply plug the above equation into your calculator and you should get x=8.66
For y: We know the angle opposite side y is= 90˚ (it is marked as a right angle) We are going to use cosine because cosine is adjacent/hypotenuse So, cos(90)= 15/y Multiply by y (y)(cos 90)=15 Now use simple algebra cos (90) = 0 Y x 0 =15 y=15
Hope this helps. By the way, I am a little rusty on this topic so I am not 100% sure that this is right (I'm 98% sure).
