# Mathematics

## Latest Math Topics

List of recently published mathematics tutorials.

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.

Jan 08, 2019

#### $\cos{(45^°)}$ value

Learn cos of 45 degrees value with introduction and its representation in different mathematical systems and proof to prove cos of 45 is 1 is divided by √2.

Jan 07, 2019

#### Properties of Right Triangle when its angle is 90°

Learn the list of properties of right triangle if the angle of triangle is a right triangle and proof to study the properties of right triangle practically.

### Math Problems

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

Jan 04, 2019

Dec 25, 2018

Dec 23, 2018

Dec 08, 2018

Dec 03, 2018

Oct 22, 2018

#### Evaluate $\displaystyle \large \lim_{x \to 0}{\normalsize \dfrac{e^{3+x}-\sin{x}-e^3}{x}}$

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