The sides of right-angled triangles are labelled opposite, hypotenuse and adjacent. Trigonometry explores the relationship between sides and angles in right-angled triangles. The hypotenuse is the ...

The golden ratio or Fibonacci spiral crops up all over the place. Here’s why it should crop up in your photography, too!

Investopedia contributors come from a range of backgrounds, and over 25 years there have been thousands of expert writers and editors who have contributed. Eric's career includes extensive work in ...

While we're not going to get into every single possible ratio in Factorio here, because they are endless, let's talk about what these ratios are and why they are important for maximum efficiency in ...

Will Kenton is an expert on the economy and investing laws and regulations. He previously held senior editorial roles at Investopedia and Kapitall Wire and holds a MA in Economics from The New School ...

Trigonometric graphs can be sketched when you know the amplitude, period, phase and maximum and minimum turning points. Learn about graphs of trigonometric functions in this National 5 Maths guide.

When you're applying for a loan, whether it's auto financing or a mortgage, the numbers matter. One important figure to understand is your loan-to-value ratio, often abbreviated as LTV. This is the ...

Your cholesterol/HDL ratio is your total cholesterol divided by your HDL level. A cholesterol/HDL ratio of below 3.5 is optimal and indicates a very low risk for heart disease. Ratios above 5 to 1 are ...

Exercise is important for keeping the musculoskeletal system healthy. Bones support the body and protect vital organs. Skeletal muscles help move parts of the body by contracting. The musculoskeletal ...