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Sin(8x+17)=cos(2x)? X2+y2−14x+14y+89=0 is the equation of a circle. What is the radius of the circle? What is osmotic pressure? why is it important? Please help me with my math! :)? Top of a 237-ft lighthouse, the angle of depression to a ship in the ocean is 26°. How far is the ship from the base of the lighthouse?