- Help me solve a - ((tan 15)*a)/2? I know it will be (√3/2)a, but I need to see the steps.?

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Did NASA invent thunderstorms? They're really into space and the Earth so I was just wondering.? Three structure similarities between human skin and pig skin? What are all the possible rational zeros of 4x^3+5x^2-x+2? Is there a signalling cascade in ion linked receptors? What is the end behavior of f(x)=-2x^3+5x^2+3x-1 using limit notation?

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