Question

if a=3, b=4, c=5 then sinA/2=​

Answer 1

Answer:

1/√10

Step-by-step explanation:

Sin(A/2) = √(S-b) (S-c) /√bc

S = a/2 + b/2 + C/2

s = 6

Sin(A/2) = √(6-4) (6-5) /√4×5

Sin(A/2) = √2/√20

Sin(A/2) = 1/√10