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Vector A makes an angle of 20° and B makes an angle of 110° with the x axis. The magnitudes of A= 20 mag of b = 30. Find angle of resultant? 2(3+X) = 8? If you're given 2 system of equations that are planes, and you are given a point, how to find equation of line perpendicular to given? An expanding universe must be flat,that is to say,euclidian geometry must be valid for large scales? Quick question: Can someone pls explain this biology question to me, I don't understand what im being question?