ONE MINUTE TO ACE is an educational series by Berleaf Education that aims to share knowledge and learning hacks with passionate learners around the world. 

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Suitable for: Secondary 2 and above

Let us help you memorise the basic trigonometric ratios!

In a right-angle triangle, the longest side is known as the hypotenuse, while any of the angles apart from the right angle can be defined as Theta.

Taking reference to the angle, the direct opposite edge of the triangle is known as the opposite, while the adjoining side is known as the adjacent.

Trigonometric ratio, a.k.a Trigo ratio, in short, is a comparison of any two sides of the right angle triangle usually expressed as a fraction.

The three primary Trigo ratios are sine, cosine and tangent. which are abbreviated as follows and each of them is calculated in the following manner:

Taking the first letter of each of the words found in the ratios and putting them together, you can easily remember these ratios as TOA (TWAH), CAH (CAR), SOH (SO-OH) which in Hokkien means big foot lady

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