DLMF:4.21.E20 (Q1722)

From DRMF
Revision as of 18:26, 1 January 2020 by Admin (talk | contribs) (‎Changed an Item: Add constraint)
Jump to navigation Jump to search
No description defined
Language Label Description Also known as
English
DLMF:4.21.E20
No description defined

    Statements

    Defining formula
    cos 2 ⁡ u - sin 2 ⁡ v = cos ⁡ ( u + v ) ⁢ cos ⁡ ( u - v ) . 2 𝑢 2 𝑣 𝑢 𝑣 𝑢 𝑣 {\displaystyle{\displaystyle{\cos^{2}}u-{\sin^{2}}v=\cos\left(u+v\right)\cos% \left(u-v\right).}}
    0 references
    DLMF id
    DLMF:4.21.E20
    0 references
    Symbols used
    cosine function
    Defining formula
    cos ⁡ z 𝑧 {\displaystyle{\displaystyle\cos\NVar{z}}}
    xml-id
    C4.S14.E2.m2amdec
    0 references
     
        Retrieved from "https://drmf-beta.wmflabs.org/index.php?title=Item:Q1722&oldid=27254"