What do I need the Pythagoras theorem for?
As an example you can use it to calculate the length of the hypotenuse in a triangle. The square of the hypotenuse is equal to the sum of the squares of the other two sides.
As a formula a^2 + b^2 = c^2
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Related Maths GCSE answers
All answers ▸If I put £500 in the bank with an annual interest rate of 3% how much money will I have earned in 2 years?
Part 1 of a test has 60 marks, Part 2 has 100 marks. James scores 75% on part 1 and 48% on part 2. To pass the full test, he needs 60% of the total marks, does he pass?
Solve the equation "x^2 + 3x - 4 = 0".
Solve by completing the square: x^2 - 8x + 12 = 0