# Mathematics

## Latest Math Topics

List of recently published mathematics tutorials.

Jan 16, 2019

#### Cos double angle identity proof

Geometry proof of cosine of double angle formula to expand cos double angle functions such as cos(2x), cos(2A), cos(2θ) or any cos function which contains double angle.

Jan 15, 2019

#### Cos double angle identity

Introduction to cos double angle formula and learn how to write it mathematical form in various forms and also proof to learn how to derive cos double angle identity mathematically.

Jan 14, 2019

#### Proof of $\tan{(45^°)}$ value

Learn the geometric and trigonometric proofs to prove the exact value of tan 45 degrees is one in mathematics.

Jan 12, 2019

#### sin double angle formula proof

Learn how to derive the sin double angle identity to expand sin double angle functions such as sin(2x) or sin(2A) or sin(2θ) or any other sin double angle function in terms of angle.

Jan 10, 2019

#### $\tan{(45^°)}$ value

Introduction to tan 45 degrees and learn the value of tan 45 degrees and also geometric proof to prove the value of tan 45 degrees is one.

Jan 09, 2019

#### $\cos{(45^°)}$ Proof

Learn how to prove cos of angle 45 degrees is equal to 1 is divided by 2 in trigonometry mathematics in both trigonometric and geometric methods.

### Math Problems

Learn how to solve maths problems easily for learners and practitioners.

Jan 16, 2019

Jan 15, 2019

Jan 04, 2019

Dec 25, 2018

Dec 23, 2018

Dec 08, 2018

#### Find $\displaystyle \int{\dfrac{1+\tan^2{x}}{1+\cot^2{x}}}dx$

Math Doubts is a best place to learn mathematics and from basics to advanced scientific level for students, teachers and researchers. Know more