Question

In a ∆ABC, angle C is obtuse and sin(A+B) =√3/2
and cos(A-B) = 1/√2. Then show that A= 52 1/2​

Answer 1

Step-by-step explanation:

Hence proved PlZ like and share

Answer 2

Answer:

given that

sin(A+B) = root 3/2 eqn(1)

A+B = 60

cos(A-B)= root 1/2 eqn(2)

A-B = 45

Solving eqn 1 and 2

2A = 105

A = 52 1/2

hence proved