We have been given that r is parallel to s. Now, if we look at angle 5 and angle 1, we can see that they are corresponding angles on parallel lines. Corresponding angles are ALWAYS equal, so therefore, your answer is 128 degrees; option A! :)
Hope this helped!
Answer:
take 121 subtract it from 180 and you get 59 so angle d is 59°. and angle b is 154°
To find x, you figure out which ratio would be easiest to use.The cosine of the angle (22*) would be x/ll, since cosine is adjacent leg/hypotenuse. Type into a graphing calculator: 11cos(22)
The answer is 10.2. Make sure your calculator is in degree mode!
