Question

If cos (a + b) = 0 then sin (a - b) can be
written as.​

Answer 1

Answer :

1

Step by step explanation :

cos(a + b) = 0

cos(a + b) = cos90°

a + b = 90°

a = 90° - b

•°• sin(a - b) = sin(90° - b + b)

sin(a - b) = sin90°

sin(a - b) = 1