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  2. Mnemonics in trigonometry - Wikipedia

    en.wikipedia.org/wiki/Mnemonics_in_trigonometry

    Signs of trigonometric functions in each quadrant. All Students Take Calculus is a mnemonic for the sign of each trigonometric functions in each quadrant of the plane. The letters ASTC signify which of the trigonometric functions are positive, starting in the top right 1st quadrant and moving counterclockwise through quadrants 2 to 4.

  3. Exact trigonometric values - Wikipedia

    en.wikipedia.org/wiki/Exact_trigonometric_values

    The trigonometric functions of angles that are multiples of 15°, 18°, or 22.5° have simple algebraic values. These values are listed in the following table for angles from 0° to 45°. [1]

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    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

  5. 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.

  6. Ptolemy's table of chords - Wikipedia

    en.wikipedia.org/wiki/Ptolemy's_table_of_chords

    Ptolemy used geometric reasoning based on Proposition 10 of Book XIII of Euclid's Elements to find the chords of 72° and 36°. That Proposition states that if an equilateral pentagon is inscribed in a circle, then the area of the square on the side of the pentagon equals the sum of the areas of the squares on the sides of the hexagon and the ...

  7. Tenth grade - Wikipedia

    en.wikipedia.org/wiki/Tenth_grade

    In the Philippines, Grade 10 or Senior Year (Filipino: Ikasampung Baitang), is the last year of Junior High School and the fourth year of High School curriculum. Students enrolled in Grade 10 are usually 15–16 years old. Student can also starts as young age education usually on female students than male students at the age of 14-15 years old.

  8. Love Yourself: Answer - Wikipedia

    en.wikipedia.org/wiki/Love_Yourself:_Answer

    Love Yourself: Answer was first announced on July 16, 2018, [1] with the announcement of the album containing seven new tracks coming the following day. [10] The album was designed as the finale of the Love Yourself series, which connected the story plot of short film Love Yourself 起 Wonder, EP Love Yourself 承 'Her', and studio album Love Yourself 轉 'Tear', [1] forming the "起承轉結 ...

  9. Love Yourself: Tear - Wikipedia

    en.wikipedia.org/wiki/Love_Yourself:_Tear

    The album became the band's longest-running entry on the World Albums chart in July 2020, when it re-entered the July 18 chart issue at number 11, marking its hundredth week on the tally. [98] [99] It is the first BTS album to achieve this feat, as well as a first for any Korean language offering in the history of the chart. [98]