The personal learning network for educators

Trigonometry is a branch of mathematics. It is a central of mathematics. Trigonometry is all about the relation between the sides and angles of the triangles. The father of the trigonometry is “Hipparchus” introduce first trigonometry table. Trigonometry is the subject which is easy to understand if approach in a right manner. Go through the article to understand the basic concepts.

**Right Angle Triangle:**

Right angle triangle is a triangle in which one of its interior angle is 90 degree. The opposite side of the right angle triangle is hypothesis and the other two sides are adjacent and opposite. Basic sin, cos and tan functions are as follows,

a)Sin θ = Opposite/Hypothesis

b)Cos θ = Adjacent/Hypothesis

c)Tan θ = Adjacent/Opposite**Pythagoras Theorem:**

Pythagoras theorem is used to find the sides of the right angle. Pythagoras theorem is,

(Hypotenuse)^2= (Adjacent)^2 + (Opposite)^2 **Triangle Identities:**

Triangle identities are the function. There are some identities which are true for right angle triangles and some are true for all triangles. Understand more about trigonometry identities.**Sine and cosine rule:**

Sine and cosine rule are very important in trigonometry. This is useful to solve triangle which is not a right angle. **Sine rule:**

a/sin A = b/sin B = c/sin C**Cosine rule:**

a^2 = b^2+c^2-2ab cos A

b^2 = a^2+c^2-2ab cos B

c^2 = a^2+b^2-2ab cos C

Here a, b and c are the side of the triangle.

And A, B and C are the angle of the triangle.**Important points:**

• Understand the Trigonometry table.

• To understand trigonometry you can have an online math tutor chat.

• To know more about trigonometry basic take online trig help.

Online Math Tutor Chat

- Top News
- ·
- Everything

Ella Curtiss joined Tara Benwell's group### Delicious Educators

Connecting Educators who have tasty resources to share. I'm TEFLTara. Who are you?

3 hours ago

Antonio Rosa liked Karen Dikson's blog post The Value of Online Degree and How to Choose a Program

Friday

Vivi Hamilou liked Brenda Savoie's blog post Top 10 Digital Platforms that Turn Teachers into Mentors

Thursday

© 2017 Created by Thomas Whitby. Powered by

## You need to be a member of The Educator's PLN to add comments!

Join The Educator's PLN