Question

In a right angle triangle abc if angle b=90degree bc=3cm ac=5cm find length of ab side

Answer 1

Answer:UR ANSWER IS 4

Step-by-step explanation:

From the Pythagoras theorm

AC²=AB²+BC²

5²=AB²+3²

AB²=5²-3²

AB²=25-9

AB²=16

AB=√16

AB=4

HOPE IT HELPS

Answer 2

Answer:

4 cm

Step-by-step explanation:

$let \: bc \: be \: the \: opposite \: side \: and \: ac \: be \: the \\ hypotenuse. \\ by \: pythagoras \: theorem \: {ac}^{2} = {ab}^{2} + {ac}^{2} \\ {5}^{2} = {ab}^{2} + {3}^{2} \\ 25 = {ab}^{2} + 9 \\ {ab}^{2} = 25 - 9 \\ {ab}^{2} = 16 \\ ab = \sqrt{16} \\ ab = 4cm$