Finding out the length of one side of a triangle

The way to find the length of one side of a triangle can be to use SOHCAHTOA, an abbreviation learnt to help rememeber the process. SOH stands for sin = opposite / hypotenuse , CAH stands for cos = adjacent / hypotenuse and TOA stands for tan = opposite over adjacent. The angle of the triangle provided should be used to determine whether sin, cos or tan will be used for this particular triangle. Once this has been completed, for example if you were using sin, the formula would be sin (angle provided) = length of opposite side / length of hypotenuse side. 

Anesha A. GCSE Biology tutor, 13 plus  History tutor, 13 plus  Maths ...

1 year ago

Answered by Anesha, a GCSE Maths tutor with MyTutor

Still stuck? Get one-to-one help from a personally interviewed subject specialist


£18 /hr

Elliot D.

Degree: Mathematics (Bachelors) - St. Andrews University

Subjects offered:Maths, Physics


“Hi, I'm a 2nd year Computer Science student at St Andrews University. I mainly teach Maths at both GCSE and A-level.”

£20 /hr

Laura L.

Degree: Chemistry (MCHEM) (Masters) - Warwick University

Subjects offered:Maths, Chemistry+ 1 more


“Hi there! I'm a third-year Chemistry student, I tutor maths from 11+ to A level as well as GCSE Science, A level Biology, and Chemistry”

£30 /hr

James T.

Degree: Economics & Management (Bachelors) - Bristol University

Subjects offered:Maths, Economics


“I am currently studying Economics & Management at the University of Bristol, and love working with students of all ages, specialising in Maths and Economics at both A-Level and GCSE. I have been teaching drums and coaching tennis for ...”

About the author

Anesha A.

Currently unavailable: for regular students

Degree: Psychology (Bachelors) - Edinburgh University

Subjects offered:Maths, History+ 1 more


“I am a Psychology student at the University of Edinburgh who has always enjoyed Maths, Biology and History and undertook these subjects at advanced higher level. I am a friendly individual who is approachable and i have previous exper...”

MyTutor guarantee

You may also like...

Posts by Anesha

Finding out the length of one side of a triangle

What are the five stages of mitosis?

What are the four chambers of the heart?

What is diffusion?

Other GCSE Maths questions

The price of a book is £4. In a sale the price is reduced by 30%. Work out the sale price.

Expand and simplify (5x – 2y)(3x – 4y)

At what points does the line y = x +1 intersect the circle x^2 + y^2 + 18x + 20y + 81 = 0.

Solve: 3(x - 2) = 21

View GCSE Maths tutors

We use cookies to improve your site experience. By continuing to use this website, we'll assume that you're OK with this. Dismiss