To calculate the area of a rectangle you multiply the length by the width. A right-angled triangle is like half a rectangle. So to calculate the area of a triangle, you can work out the area of the ...

How do I learn the C programming language on my Apple Mac? The C programming language has been around since the 1970s, but it has never gone out of style, and learning C is one of the best computer ...

Looking for more revision? There are videos, diagrams and more on calculating the area of a triangle using trigonometry in this National 5 Maths guide. National 5 Maths - Calculating the area of a ...