Question

The measure of b is _______a0

Answer 1

Pythagoras a2+b2=c2 so it’s 21
212+202= 292

Answer 2

`{c}^(2) = {a}^(2) + {b}^(2)`

`{29}^(2) = {20}^(2) + {b}^(2)`

`b = \sqrt{ {29}^(2) - {20}^(2) }`

`b = √(441) \\ b = 21`