It should be the first on considering that you should not have to square anything. Only if it is addition. In your notes if you square if wouldn't be right
Let x = the amount that Seini earned Then x + 25 = the amount that Gavin The amount Gavin earned would also = 425 - x (your directions asked you to have 2 equations.) Together they earned 425: x + (x + 25) = 425 2x + 25 = 425 2x = 400 Now divide both sides by 2 to find x.
The tangent function gives the ratio of vertical to horizontal distance in this case. .. vertical distance = (horizontal distance)*tan(angle of depression) .. = (40 m)*tan(50°) .. vertical distance ≈ 47.7 m
