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What is the angle of rotation of 5x(squared)+3√3y+2y(squared)+10x-16y=0? R ghosts real? Determine the pH of a solution that is 0.10 M CH3COOH and 0.25 M CH3COONa.? How do I change (tanθ+cotθ)^2 to sec^2θ+csc^2θ? The angle of elevation of the sun is 28 degrees 10 minutes,the shadow of a tree on horizontal ground is 97.3 ft. long. How tall is the tree?