# Category:Cosine Function

This category contains results about the cosine function.

Definitions specific to this category can be found in Definitions/Cosine Function.

In the above right triangle, we are concerned about the angle $\theta$.

The **cosine** of $\angle \theta$ is defined as being $\dfrac {\text{Adjacent}} {\text{Hypotenuse}}$.

## Also see

## Subcategories

This category has the following 37 subcategories, out of 37 total.

### 4

### C

### D

### E

### H

### L

### P

### Q

### R

### S

### T

## Pages in category "Cosine Function"

The following 160 pages are in this category, out of 160 total.

### C

- Complex Cosine Function is Unbounded
- Cosine Exponential Formulation
- Cosine Exponential Formulation/Real Domain
- Cosine Function is Absolutely Convergent
- Cosine Function is Continuous
- Cosine Function is Even
- Cosine in terms of Hyperbolic Cosine
- Cosine in terms of Sine
- Cosine in terms of Tangent
- Cosine Inequality
- Cosine is of Exponential Order Zero
- Cosine is Reciprocal of Secant
- Cosine of 105 Degrees
- Cosine of 120 Degrees
- Cosine of 135 Degrees
- Cosine of 144 Degrees
- Cosine of 15 Degrees
- Cosine of 150 Degrees
- Cosine of 165 Degrees
- Cosine of 18 Degrees
- Cosine of 195 Degrees
- Cosine of 210 Degrees
- Cosine of 225 Degrees
- Cosine of 240 Degrees
- Cosine of 255 Degrees
- Cosine of 285 Degrees
- Cosine of 3 Degrees
- Cosine of 30 Degrees
- Cosine of 300 Degrees
- Cosine of 315 Degrees
- Cosine of 330 Degrees
- Cosine of 345 Degrees
- Cosine of 36 Degrees
- Cosine of 45 Degrees
- Cosine of 60 Degrees
- Cosine of 72 Degrees
- Cosine of 75 Degrees
- Cosine of 90 Degrees
- Cosine of Angle in Cartesian Plane
- Cosine of Angle plus Full Angle
- Cosine of Angle plus Full Angle/Corollary
- Cosine of Angle plus Integer Multiple of Pi
- Cosine of Angle plus Right Angle
- Cosine of Angle plus Straight Angle
- Cosine of Angle plus Three Right Angles
- Cosine of Complement equals Sine
- Cosine of Complex Number
- Cosine of Conjugate Angle
- Cosine of Difference
- Cosine of Full Angle
- Cosine of Half-Integer Multiple of Pi
- Cosine of i
- Cosine of Integer Multiple of Argument
- Cosine of Integer Multiple of Pi
- Cosine of Right Angle
- Cosine of Straight Angle
- Cosine of Sum
- Cosine of Sum/Corollary
- Cosine of Supplementary Angle
- Cosine of Three Right Angles
- Cosine of Three Right Angles less Angle
- Cosine of x minus Sine of x
- Cosine of x minus Sine of x/Cosine Form
- Cosine of x minus Sine of x/Sine Form
- Cosine of Zero is One
- Cosine to Power of Even Integer
- Cosine to Power of Odd Integer
- Cotangent is Cosine divided by Sine

### D

### E

### M

### P

- Particular Values of Cosine Function
- Power Reduction Formula for 4th Power of Cosine
- Power Reduction Formula for Cube of Cosine
- Power Reduction Formulas/Cosine Cubed
- Power Reduction Formulas/Cosine Squared
- Power Reduction Formulas/Cosine Squared/Proof 1
- Power Reduction Formulas/Cosine Squared/Proof 2
- Power Reduction Formulas/Cosine to 4th
- Power Reduction Formulas/Cosine to 5th
- Power Series Expansion for Cosine Function
- Power Series Expansion for Exponential of Cosine of x
- Power Series Expansion for Exponential of x by Cosine of x
- Power Series Expansion for Logarithm of Cosine of x
- Primitive of Cosine Function
- Properties of Real Cosine Function
- Prosthaphaeresis Formula for Cosine minus Cosine
- Prosthaphaeresis Formula for Cosine plus Cosine
- Prosthaphaeresis Formulas/Cosine minus Cosine
- Prosthaphaeresis Formulas/Cosine plus Cosine

### Q

### S

- Secant is Reciprocal of Cosine
- Sextuple Angle Formula for Cosine
- Shape of Cosine Function
- Shape of Cosine Function/Graph
- Sign of Cosine
- Simpson's Formula for Cosine by Cosine
- Simpson's Formula for Sine by Cosine
- Simpson's Formulas/Cosine by Cosine
- Simpson's Formulas/Cosine by Sine
- Simpson's Formulas/Sine by Cosine
- Sine and Cosine are Periodic on Reals
- Sine and Cosine are Periodic on Reals/Corollary
- Sine and Cosine Exponential Formulation
- Sine and Cosine of Angle plus Integer Multiple of Pi
- Sine and Cosine of Complementary Angles
- Sine and Cosine of Conjugate Angles
- Sine and Cosine of Supplementary Angles
- Sine in terms of Cosine
- Sine of Complement equals Cosine
- Sine of x minus Cosine of x
- Sine of x minus Cosine of x/Cosine Form
- Sine of x minus Cosine of x/Sine Form
- Sine of x plus Cosine of x
- Sine of x plus Cosine of x/Cosine Form
- Sine of x plus Cosine of x/Sine Form
- Square of Cosine
- Sum of Cosines of Arithmetic Progression of Angles
- Sum of Cosines of Fractions of Pi
- Sum of Cosines of Multiples of Angle
- Sum of Infinite Series of Product of nth Power of cos 2 theta by 2n+1th Multiple of Sine
- Sum of Infinite Series of Product of nth Power of Cosine by nth Multiple of Cosine
- Sum of Infinite Series of Product of Power and Cosine
- Sum of Series of Product of Power and Cosine
- Sum of Squares of Sine and Cosine