Question

if sin (A+B)=1 and cos (A - B)= 1, then the value of A and B are​

Answer 1

Answer:

Step-by-step explanation:

sin 90 = 1         So,

sin (A+B) = 90

And , cos 0 = 1

cos (A-B) = 0

A+B = 90

A-B =   0

-   +     -

  2B = 90

    B = 90/2

    B = 45

A+B = 90

A+45 = 90

A= 90 - 45

A = 45