pythagorean theorem
Subject:
a squared + b squared = c squared
Trigonometry
Forum reference:
Book page:
http://course-notes.org/Trigonometry
Trigonometric Identities
Subject:
Tags:
AN IDENTITY IS AN EQUALITY that is true for any value of the variable. (An equation is an equality that is true only for certain values of the variable.)
In algebra, for example, we have this identity:
(x + 5)(x − 5) = x² − 25.
The significance of an identity is that, in calculation, we may replace either member of the identity with the other. We use an identity to give an expression a more convenient form. In calculus and all its applications, the trigonometric identities are of central importance.
On this page, we will present the main identities. The student will have no better way of practicing algebra than by proving them. Links to the proofs appear below.
Reciprocal identities
sin θ = 1
csc θ csc θ = 1
sin θ
Easy way to solve csc, sec and cot equations
Subject:
csc x = someNumber
find angle x
x=sin^-1(1/someNumber)
sec x = someNumber
find angle x
x=cos^-1(1/someNumber)
cot x = someNumber
find angle x
x=tan^-1(1/someNumber)
Inverse Hyperbolic Functions
Subject:
Since hyperbolic functions are defined in terms of exponential functions, it is expected that their inverses can be expressed in the inverse of their exponential functions: Inverse Hyperbolic Functions in terms of logarithms
7inver1,7inver2,7inver3,7inver4,7inver5,7inver6,7inver7,7inver8,7inver9,7inver10,7inver11,7inver12
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Trigonometric Functions
Subject:
In mathematics, the trigonometric functions (also called circular functions) are functions of an angle. They are used to relate the angles of a triangle to the lengths of the sides of a triangle. Trigonometric functions are important in the study of triangles and modeling periodic phenomena, among many other applications.
Formula for completing trig functions
Subject:
f(x+h)- f(x)
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h
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Premium Content
Inverse Hyperbolic Functions
Inverse Hyperbolic Functions
Since hyperbolic functions are defined in terms of exponential functions, it is expected that their inverses can be expressed in the inverse of their exponential functions:
Inverse Hyperbolic Functions in terms of logarithms:
Hyperbolic Functions
Hyperbolic Functions
Hyperbolic Functions are defined in terms of exponential functions but are like trig. functions in many ways.
Hyperbolic Functions
Hyperbolic Functions
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