DLMF:4.42.E2 (Q1990): Difference between revisions

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‎Changed an Item: Add constraint
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Property / Symbols used
 
Property / Symbols used: Q11254 / rank
 
Normal rank
Property / Symbols used: Q11254 / qualifier
 
Defining formula:

A 𝐴 {\displaystyle{\displaystyle A}}

A
Property / Symbols used: Q11254 / qualifier
 
xml-id: C4.S42.XMD1.m1bdec

Revision as of 19:24, 1 January 2020

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English
DLMF:4.42.E2
No description defined

    Statements

    Defining formula
    cos ⁡ A = b c = 1 sec ⁡ A , 𝐴 𝑏 𝑐 1 𝐴 {\displaystyle{\displaystyle\cos A=\frac{b}{c}=\frac{1}{\sec A},}}
    0 references
    DLMF id
    DLMF:4.42.E2
    0 references
    Symbols used
    cosine function
    Defining formula
    cos ⁡ z 𝑧 {\displaystyle{\displaystyle\cos\NVar{z}}}
    xml-id
    C4.S14.E2.m2adec
    0 references
    secant function
    Defining formula
    sec ⁡ z 𝑧 {\displaystyle{\displaystyle\sec\NVar{z}}}
    xml-id
    C4.S14.E6.m2adec
    0 references
    Q11254
    Defining formula
    A 𝐴 {\displaystyle{\displaystyle A}}
    xml-id
    C4.S42.XMD1.m1bdec
    0 references
     
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