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Discover Questions

(sin^2) X+ (cos^2) X? Find the values of k for which the equation has two equal real solutions: x^2 + ( k - 1 )x + 1 *I got k= +/- 2* but that s wrong? Is there a difference between a sinusoidal graph and a trigonometric graph? Within each column, or group, on the periodic table, the differen elements´atoms usually have the same number? What is
the the number of lines of symmetry
and the order of rotational symmetry
of a regular octagon with three diagonals?