Trigonometry Lesson

Basic Trigonometry

Intro

Hello folks, today we will be discussing basic trigonometry terms and formulas. We will practice solving in another lesson. Hey everyone, get ready for an awesome discussion on basic trigonometry terms and formulas today! We are going to dive deep into the world of trigonometry and uncover some super cool concepts.

What is trigonometry?

Trigonometry is one of the important branches in the history of mathematics that deals with the study of the relationship between the sides and angles of a right-angled triangle. This concept is given by the Greek mathematician Hipparchus. Trigonometry is an important part of math history. It deals with the study of the relationship between the sides and angles of a right-angled triangle. This idea was first given by the Greek mathematician Hipparchus.

Trigonometry Terms

The 3 main terms in trigonometry are, Sine, Cosine, and Tangent.

Trigonometry Mnemonic

There is a simple mnemonic to help you remember the trigonometry functions and their formulas. It is SOHCAHTOA
SOH= To calculate Sine, the formula is O for Opposite divided by H for the hypotenuse.
CAH= To calculate the Cosine, the formula is A for Adjacent divided by H for the hypotenuse.
TOA= To calculate Tangent, the formula is O for opposite divided by A for Adjacent.

Triangle parts

The longest part of a triangle is the hypotenuse, the part next to the right angle is Opposite and the one next to theta(θ) is Adjacent

Multiple Choice

What is the longest part of a Triangle?

• Hypotenuse

• Opposite

• Adjacent

• Theta

Multiple Choice

What is the representation of theta?

• θ
• φ
• Θ
• ϑ

Multiple Choice

What type of triangle is used in trigonometry?

• scalene triangle
• right-angled triangle
• equilateral triangle
• isosceles triangle

Poll

What did you think of today's lesson?

• Good

• Medium

• Terrible

• Awesome?

Open Ended

Do you have any questions or concerns?