1.Write the point (-2,2) in polar coordinates. (You may use pi, )+ 2. Find an equation...

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1.Write the point (-2,2) in polar coordinates. (You may use pi, )+ 2. Find an equation for the sphere of radius 3 with center (1,2-1). H 3. Find the sum of the vectors <0,-3,1>+ <1,5,1>, and its length. 4. Find a unit vector in the same direction as <1.2.2>.+ 1.Write the point (-2,2) in polar coordinates. (You may use pi, )+ 2. Find an equation for the sphere of radius 3 with center (1,2-1). H 3. Find the sum of the vectors <0,-3,1>+ <1,5,1>, and its length. 4. Find a unit vector in the same direction as <1.2.2>.+