120 Consider: You know that the supplement of an angle is equal to 180 minus the angle. You also know that an angle is twice it's supplement. Now, if you think of angle as being "A", and it's...
Incline of a slope.
Incline as in the gradient?
Depends on what information you alreading have. Application of Trigonometry equations should help with working out the answer. Think of the slope as...