Question

n the given figure, B = 900 , AB = BC = 3 cm, then the length of AC is,

Answer 1

Answer:

given,

ABC is a right angle triangle ,right angle is at B

BC=3cm

AC=5cm

then  ,the lenght of side AB =?

By pythagoras theorem : in a right triangle ,the lenght of the hypotenuse is equal to the sum of the square of lenght of the other two sides .

ac^2=ab^2+bc^2

5^2=ab^2+3^2

25=ab^2+9

25-9=ab^2

16=ab^2$\sqrt$16

ab=4 cm

therefore the value of AB is 4 cm

verification:

5^2=4^2+3^2

25=16+9

25=25

hope it was helpful

mark me as brainlist rate 5 star

and refer the attachment