Pythagoras' Theorem
Pythagoras was a Greek philosopher who discovered that in a right angled triangle (triangle with one angle 90 degrees) the hypotenuse squared , c2, was equal to the sum of the other sides squared, a and b. The hypotenuse is the longest edge and is opposite the right angle, a and b are the adjacent sides, next too, the right angle.
We call this Pythagoras' Theorem: a2+b2=c2
If we know two of the three sides we can use this theorem to work out the other, by subbing in the values known and rearranging.
KC
Related Maths GCSE answers
All answers ▸b)You are given g(x) = ax + b; You are also given that g(0) = 4 and g(1) = - 6; Find the value of a and the value of b
3/5 of a number is 162. Work out the number.
5 students are in a maths class and 10 students are in a physics class. The mean mark of the maths class is 90 and the mean mark of the physics class is 85. Work out the mean mark of both classes.
Show x^2 + 8x +15 = 0 in the form of (x+b)^2 +c (complete the square) and then solve the equation