- If tanb=2, how can I evaluate and simplify tan(pi/3+b)?

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10 POINTS TO BEST ANSWER! At what distance from a proton is the magnitude of its electric field 2.5×105? Can someone help please help me with this question? Express the following functions in the form a(x - h)2 + k. (b) f (x) = 2x2 - 40x + 209 (c) f (x) = -4x2 - 8x - 11 Thank you!!!? ANY HELP IS APPRECIATED!!!! Find the vertex of the following quadratic functions.
(a) f(x) = -5(x - 6)^2 + 9 (b) f(x) = -x^2 + 4x - 1? A rectangle has a perimeter of 1160 miles. The width is 100 miles less than the length. Find the length and the width.?

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