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Will salad dressing with vinegar trigger a positive for etg test? Is there a difference between a sinusoidal graph and a trigonometric graph? Complete the proof will give best answer? Find the limit without using l hopital s rule or power series. only algebra and trig identities limit x->0 (sin(3x)-3x)/x^3? Is there any viable theory besides the Big Bang theory that explains the cause of motion?