How can I use the Pythagoras' Theorem to work out the length of a missing side of a triangle?
We have the triangle ABC. AB = 3 BC = 4 AC = ?
By inputting these numbers into the Pythagoras' Theorem, we can out the length of the missing side (AC).
a2 + b2 = c2
AB2 + BC2 = AC2
9 + 16 = AC2
25 = AC2
Square root both sides of the equation and we get AC = 5
ZE
Related Maths GCSE answers
All answers ▸Factorise and solve x^2 - 8x + 15 = 0
Tom is making gift bags, each of which will contain two balloons. He wants to hide a sweet in one of the balloons. 20 balloons cost £1.33, 15 sweets cost £2.05. What is the minimum he needs to spend to make 35 bags?
Solve: 5x - 2 > 3x + 11
Write down the coordinates of the turning point of the graph y = x^2 – 8x + 25