- How do I solve: cos2x+sin^2x=0?

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What is this in the water? For An Arithmetic Sequence. Given A3=-14 And A10=77, Determine D, A1, And Nth Term.? What determines the strength of acids and bases? The average kinetic energy of the molecules of a sample of h2o will ? as the temperature decreases? Two numbers, a and b, are such that a>b. Their sum is 49. Write an equation to represent this information. Would it still be a+b=49?