Math question, need help!!!?

No. 3: 35 degrees is the right answer.Take a pencil and paper.Draw a vertical line, mark the top C and the bottom :B. From B draw a horizontal line to the right. which will become Line segment AB. This makes angle B 90 degrees.Using a protractor, measure down from the line segment BA at PointB down 125 degrees. Mark this point, and run a straight line from it through Point B and continue it past Point C. Using a right angle, slide one leg up up the line through B until the other leg strikes Point C. Mark the corner point of your right angle as Point D. Draw a line from C to and thru this point until it crosses the horizontal line. Mark this as point A. You now have formed your right triangle. Extend line segment CB down past its intersection with extended line segment BD. You will note Line segment AB forms a right angle with extended doward line segment CB. Subtracting 90 degrees from 125 degrees, we find the angle between the two is 35 degrees. which is the same as angle CBD. Since angle CBA is a right angle,angle BCA must be 55 degrees. Since Angle CBA is 90 degrees and BCA is 55 Degrees, The measure of Angle A must be 35Degrees . Hopes this helps. .