Answer: 25*tan(35°)
Step-by-step explanation: For this problem, since the triangle is a right triangle, you must use the formula, tangent(Ф) = opposite/adjacent. In this case, Ф = 35 degrees. The side opposite to the angle Ф is x, and the side adjacent to Ф is 25. Therefore,
tangent(35°) = x/25
After multiplying the 25 over,
x = 25*tan(35°)