Question

1.In AABC, B=90°,2 C 45° ,BC-a,then find AC​

Answer 1

Step-by-step explanation:

BD is equal to 2 sqrt2.

Mid point of AC will be circumcenter.

As AC = 4 sqrt2

DC=DA= 2 sqrt2

Since D is circumcenter then any point from D on circle circumscribing ABC is equal to circumradius i.e DC=DA=DB = 2 sqrt2

Hope it helps.