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  2. List of trigonometric identities - Wikipedia

    en.wikipedia.org/wiki/List_of_trigonometric...

    A formula for computing the trigonometric identities for the one-third angle exists, but it requires finding the zeroes of the cubic equation 4x 3 − 3x + d = 0, where is the value of the cosine function at the one-third angle and d is the known value of the cosine function at the full angle.

  3. Trigonometric substitution - Wikipedia

    en.wikipedia.org/wiki/Trigonometric_substitution

    Substitutions of hyperbolic functions can also be used to simplify integrals. [ 4 ] For example, to integrate 1 / a 2 + x 2 {\displaystyle 1/{\sqrt {a^{2}+x^{2}}}} , introduce the substitution x = a sinh ⁡ u {\displaystyle x=a\sinh {u}} (and hence d x = a cosh ⁡ u d u {\displaystyle dx=a\cosh u\,du} ), then use the identity cosh 2 ⁡ ( x ...

  4. Closed-form expression - Wikipedia

    en.wikipedia.org/wiki/Closed-form_expression

    The quadratic formula =. is a closed form of the solutions to the general quadratic equation + + =. More generally, in the context of polynomial equations, a closed form of a solution is a solution in radicals; that is, a closed-form expression for which the allowed functions are only n th-roots and field operations (+,,, /).

  5. My Husband's Grandpa Cracked the Code to the Best-Ever ... - AOL

    www.aol.com/husbands-grandpa-cracked-code-best...

    1 1/4 cup granulated sugar. 1 cup (2 sticks) unsalted butter, at room temperature. 2 large eggs. 2 3/4 cups flour. 1/4 cup instant vanilla pudding mix. 1 teaspoon cream of tartar1 teaspoon baking ...

  6. US Border Patrol agents warned of alleged revenge attack ...

    www.aol.com/news/us-border-patrol-agents-warned...

    Mexican cartel leaders have allegedly put out a hit against US Border Patrol along the San Diego sector after one of their members was run over by an agent, according to a new report.

  7. Heartwarming story of man missing 25 years is darker. He's a ...

    www.aol.com/heartwarming-story-man-missing-25...

    Marcella Nasseri found her missing brother Thomas Manizak through a USA TODAY story after 25 years. New details emerge of his background.

  8. Quadratic formula - Wikipedia

    en.wikipedia.org/wiki/Quadratic_formula

    The roots of the quadratic function y = ⁠ 1 / 2x 23x + ⁠ 5 / 2 ⁠ are the places where the graph intersects the x-axis, the values x = 1 and x = 5. They can be found via the quadratic formula. In elementary algebra, the quadratic formula is a closed-form expression describing the solutions of a quadratic equation.

  9. Big Lots is planning "going out of business" sales at all of ...

    www.aol.com/big-lots-planning-going-business...

    Big Lots is preparing to close all of its stores, the bankrupt discount retailer said Thursday. The company had previously planned to sell its assets to private equity firm Nexus Capital ...