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Trigonometry Basics for Beginners: Ratios to Identities
Rating: 4.5 out of 5(15 ratings)
943 students

Trigonometry Basics for Beginners: Ratios to Identities

Learn trigonometry from scratch: trigonometric ratios, identities, values table, and real-world applications.
Created byLetstute .... Make it Easy
Last updated 7/2026
English
English [Auto],

What you'll learn

  • Understand trigonometric ratios and how they work
  • Learn the trigonometric ratios of complementary angles
  • Use easy tricks to remember trigonometric values
  • Derive and use the trigonometric value table
  • Understand and apply trigonometric identities
  • See how trigonometry is applied in the real world
  • Use and make a clinometer through hands-on activities
  • Solve trigonometry problems step by step
  • Master a simple trick to understand trigonometry formulae
  • Build the confidence to score well in exams

Course content

2 sections • 14 lectures • 1h 50m total length

  • Introduction and Trigonometric ratio10:42

    Trigonometry is a branch of Mathematics that deals with the study of relationship between sides and angles of a Right Angled Triangle and Trigonometric ratios are ratios of sides of a Right Triangle known as sin, cos, tan, cot, sec and cosec.

    In this session you will learn about:

    1) Properties of Right angled Triangle

    2) Trigonometric ratios

    3) Trick to remember ratios

    4) A small problem to solve 

  • Trigonometry ratios of complementary angles10:04

    When the sum of two angles is 90 degree they are called complementry angles. In Right angled triangle, two non-right angles complement each other as sum of their angle is 90 degree.

    In this session you will learn about the relationship between the Trigonometric ratios of complementary angles and their multiple uses. So watch this session and explore the topic.

  • Trigonometric ratio - value table (derivation)9:56

    There are in total 6 trigonometric ratios for 5 standard angles (0, 30, 45, 60 and 90) degrees. so we have 30 ratios in total which are constant for any kind of Right angles.

    In this video you will learn how these ratios are derived. 

  • Trick to remember Trigonometric values10:10

    There are in total 6 trigonometric ratios for 5 standard angles (0, 30, 45, 60 and 90 degrees). so we have 30 ratios which are constant for any kind of Right angles but at times it becomes difficult ot remember all the values.

    This video is purely dedicated to a trick that will help you in remembering these trigonometric ratio values.

  • Basic Trigonometric Identities9:25

    There are basically three main Trigonometric ratios, Sin, cos and Tan wehreas Cosec, Sec and Cot are the reciprocals of them respectively which are called Trigonometric Identities. Also these ratios establish some relation between them in the form an equation, so are called Trigonometric equations.

    Watch this session to learn about all this through derivation and practice questions.

Requirements

  • No prior trigonometry knowledge required
  • Basic understanding of triangles and angles
  • Basic arithmetic and algebra
  • A notebook and pen for practice
  • A calculator (or phone calculator)
  • A device to watch the lessons
  • Willingness to practise problems

Description

Trigonometry is the branch of mathematics that deals with the relationships between the sides and angles of a triangle, and once you understand it, it becomes one of the most satisfying topics in maths.

This course gives you a clear, complete understanding of trigonometry, built in an easy-to-follow, logical format. Through video lectures for concept explanation, quiz videos to test your knowledge, and assessment tools to practise problem-solving, you'll move from the very basics to confident application.

You'll start with an introduction to trigonometric ratios, then learn the ratios of complementary angles, handy tricks to remember trigonometric values, and how the value table is derived. From there you'll master trigonometric identities and see how trigonometry is applied in the real world, including hands-on activities like using and making a clinometer. Along the way, you'll work through solved sample questions and problem-solving sessions, plus a clever trick to understand trigonometry formulae easily.

Whether trigonometry is part of your school curriculum or you simply want to finally understand it, this course breaks every concept down so it genuinely makes sense.

By the end, you'll be thorough with the subject and able to solve trigonometry problems with confidence, and score well in your exams. Enroll now and make trigonometry easy.

Who this course is for:

  • School and college students studying trigonometry
  • Students who find trigonometry difficult and want it made clear
  • Beginners learning trigonometry from scratch
  • Students preparing for board or competitive exams
  • Teachers looking for engaging ways to teach trigonometry
  • Anyone who wants to understand trigonometry with confidence

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