For this, you need to implement trigonometry, and the soa cah toa method is the one that I use. in this case you would use the tangent, which is toa, opposite over adjacent. in your calculator you will have to click the tan button on your calculator. in the parentheses type in 25 because that is the angle measure that you know. in this case, the side that you don't know is the adjacent side so it would be tan(25)=x/1 (I think it was a 1, it looked like the picture cut it off). this means to isolate the x you need to multiply it by the opposite length (the one on the bottom, 1) and so you need to multiply tan(25) by 1 (or whatever it is on the bottom of the equation/opposite length on the picture). you should get your answer that way and it should be bigger than the opposite side.
