For trigonometry and triangles, see under Shape and geometry
Trigonometric functions
- 5 Trigonometric Inequality
- 5 Period and frequency of trig functions
- 5 Minimum of 1/(2cos4x+3sin4x)
- 5 Proving tan(x)=-tan(-x)
- 5 cos(i)=cosh(1)
- 5 Trig functions with complex variables
- 5 Exact calculation of sines, cosines and angles
- 5 Exact Values of Trigonometric Functions
- 5 cos(7p/12) in surd form
- 5 Surd form of tan(3p/8)
- 5 cos(p/8)
- 5 Sin(pi/10) as a surd expression
- 5 Definition of Cosine
- 6 Rational Cosine
- 5 Cos(m) Irrational
- 5 What is sin 1040?
Trigonometric identities and equations
- 4 Generate Trigonometric Identities
- 5 Intersection of y=tan x and y=cos x
- 5 tan(q) = 1 ± 20.5
- 5 tan(3x)=tan(x)
- 5 sinq-cosq
- 5 Deriving sinA+sinB formula
- 5 2cos3xcosx = cos2C + cosC
- 5 3sinx + 4cosx + 3 = 0
- 5 Prove tan(4pi/11)+4sin(pi/11)=sqrt(11)
- 5 Solve cos2x-cos4x=sin2x
- 5 <<A HREF=../2886.html >Trigonometric Identities
- 5 Expansion of tan(A+B)
- 5 Solve sin6x-sin4x=sin5x-sin3x
- 5 sin(x+a)=sqrt(2)cos(x-a): find tan(x)
- 5 Manipulating trig expressions
- 5 Questions about roots of x2 + 2xsinq + 3cos2q = 0
- 5 cos3q=sinq
- 5 cos(sinx) > sin(cosx)
Hyperbolic functions and identities
- 5 Trig identity to hyperbolic identity
- 5 Hyperbolic Trigonometrical Functions
- 5 Hyperbolic question
- 5 tanh(2x)
- 5 ò Cosh2x dx and hyperbolic identities
- 5 Inverse hyperbolics in logarithmic form
- 5 tanh2(x/2)=(cosh(x)-1)/(cosh(x)+1)
Exponentials and logarithms
- 4 Solving equations such as 7x=343
- 5 Definition of yx for irrational x
- 5 Solving log equations
- 5 Manipulating logs
- 5 Logs puzzle
- 5 Exponential growth problem
- 5 Hyperbolic functions, natural logarithms and complex numbers
- 5 Inverse hyperbolics in logarithmic form
- 5 Inx (or ln x)
- 5 e
- 5 ln2 = 0: series paradox?
- 6 log(1)+log(2)+log(3)+...
Series expansions
- 5 Proving MacLaurin's theorem
- 5 Maclaurin's series don't always work...?
- 5 Maclaurin series for tan(x), and polynomial division
- 5 Binomial Expansion: (1 + px + qx2)-2
- 5 Binomial Theorem to find 1.16
- 5 Series for trigonometric functions and ex
- 5 Trigonometric Power Series
- 5 Pi's value as an infinite series
- 5 Infinite Series for Sine and Cosine
- 5 Exact calculation of sines, cosines and angles
- 5 Maclaurin series for sin2x
- 5 Series for 1/sin(x)
- 5 A Logarithmic Series
- 5 Log Power Series
- 5 Series expansion for cos-1x
- 5 cos(q)+ cos(3q) + cos(5q)+....+ cos(2n-1)q = sin(2nq)/sin(q)
- 5 Coefficient of x34 in expansion of (1-3x+x2+2x4)10
- 6 Reconciling definitions of sine
Applications
- 5 Triangle right-angled iff a2+b2+c2=8R2
- 4 Distance of horizon from leaning tower
- 5 Motivate project: The sun
Miscellaneous
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