Question

If sin a+cos b=1 where a=30 and b is another acute angle find angle b

Answer 1

Answer:

b = 60 degree

Step-by-step explanation:

We have,

sina + cosb = 1

sin30 + cosb = 1  [Where a = 30]

1/2 + cosb = 1

cosb = 1 - 1/2 = 1/2

cosb = cos60

b = 60