. For making plots, you may use any technology. Good choices include Mathematica, Geogebra 3D, CalcPlot3D, and Math3d.org. Label key items for your plots. You may do this digitally within your app, or you may print your plots and make labels with pen/pencil. You should also include printouts of any code used such as equations of lines & planes. Consider the sphere S with center at origin and passing through point T(1, 1, 1). 1. Find an equation for S and plot it. Consider the plane P tangent to this sphere S at point T. 2. Use basic geometry and trig to find a vector n orthogonal to this plane P at the point T. Do NOT use calculus to find this vector. Use vector n to find: 3. An equation of the tangent plane P. 4. An equation of the line L with direction vector n passing through the point T