Question

If sin ( A – B ) = 1/2 and cos ( A + B) = 1/2 find the value of A is ----------- ( degrees)​

Answer 1

Step-by-step explanation:

it is very simple put value in formula

Answer 2

Answer:

45 degree

Step-by-step explanation:

taking value of angle between 0 and 90 degree

sin(A - B) = 1/2

this gives A - B = 30. degree

similarly

cos(A+B) = 1/2

this gives

A +B = 60 degree

adding the two eqns we get

2A = 90

A = 45 degree