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  2. Social insurance number - Wikipedia

    en.wikipedia.org/wiki/Social_insurance_number

    A social insurance number (SIN) (French: numéro d'assurance sociale (NAS)) is a number issued in Canada to administer various government programs. The SIN was created in 1964 to serve as a client account number in the administration of the Canada Pension Plan and Canada's varied employment insurance programs.

  3. Exact trigonometric values - Wikipedia

    en.wikipedia.org/wiki/Exact_trigonometric_values

    In contrast, by the Lindemann–Weierstrass theorem, the sine or cosine of any non-zero algebraic number is always transcendental. [4] The real part of any root of unity is a trigonometric number. By Niven's theorem, the only rational trigonometric numbers are 0, 1, −1, 1/2, and −1/2. [5]

  4. 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.

  5. Service number - Wikipedia

    en.wikipedia.org/wiki/Service_number

    The Social Insurance Number (SIN) replaced the regimental number in the 1960s. 123 456 789; The SIN was itself replaced by a Service Number in the 1990s. X12 345 678; The use of the SIN was granted by Revenue Canada to the CF for service numbers as a temporary measure and was revoked in the 1990s. The new Service Number used a random alphabetic ...

  6. National identification number - Wikipedia

    en.wikipedia.org/wiki/National_identification_number

    X 1 = the sum of the digits in the ID number's odd positions (excluding Z) X 2 = 2 multiplied by the concatenation of the digits in the ID number's even positions; X 3 = the sum of the digits in X 2; X 4 = X 1 + X 3; Z = the difference between 10 and the last digit of X 4 (X 4 mod 10)

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    AOL latest headlines, news articles on business, entertainment, health and world events.

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  9. INSEE code - Wikipedia

    en.wikipedia.org/wiki/INSEE_code

    ll is the number of the department of origin : 2 digits, or 1 digit and 1 letter in metropolitan France, 3 digits for overseas. ooo is the commune of origin (a department is composed of various communes) : 3 digits in metropolitan France or 2 digits for overseas.