Find the length of side xx in simplest radical form with a rational denominator.

Express the following as a function of a single angle. cos(60) cos(-20) - sin(60) sin(-20)

Use the formulas a = x 2 – y 2, b = 2xy, c = x 2 + y 2 to answer this question. one leg of a right triangle has length 11 and all sides are whole numbers. find the lengths of the other two sides. the other leg = a0 and the hypotenuse = a1

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