human
Recall the correct formula to calculate the length of a non-hypotenuse of a right-angled triangle in a 2D Pythagoras questions A right-angled tringle has sides a, b, and \( c \) as shown.

Choose the formula for finding side a. ![Right-angled triangle with height a, base b and hypotenuse c.]() \( a=c-b \)
gpt
Thinks that the square root of an expression square roots each term in the expression, rather than square rooting the whole expression