Question

Sin A + Cos B = 1 A = 30 degrees and B is an acute angle then find the value of B.​

Answer 1

Answer:

B = 60°

Explanation:

Sin30° + Cos B = 1

1/2 + Cos B = 1

Cos B = 1 - 1/2

Cos B = 1/2

Cos B = Cos 60°

B = 60°

Answer 2

Answer:

B = 60°

Explanation:

Given that

sin A+ cos B = 1

sin 30°+ cos B = 1

1/2+ cos B. = 1

cos B = 1-½

cos B = ½

cos B = cos 60°

B= 60°