Inverse Trigonometric Functions - Arctangent Addition Formula

Arctangent Addition Formula

This is derived from the tangent addition formula

by letting

Read more about this topic:  Inverse Trigonometric Functions

Famous quotes containing the words addition and/or formula:

    As easy mayst thou fall
    A drop of water in the breaking gulf,
    And take unmingled thence that drop again,
    Without addition or diminishing,
    As take from me thyself and not me too.
    William Shakespeare (1564–1616)

    I feel like a white granular mass of amorphous crystals—my formula appears to be isomeric with Spasmotoxin. My aurochloride precipitates into beautiful prismatic needles. My Platinochloride develops octohedron crystals,—with a fine blue florescence. My physiological action is not indifferent. One millionth of a grain injected under the skin of a frog produced instantaneous death accompanied by an orange blossom odor.
    Lafcadio Hearn (1850–1904)