Question

Sin A + cos B = 1 , A = 30 ° and B is an acute angle .then find the value of B.​

Answer 1

Answer:

We know sinA=cos(90−A)

Given, sinA=cosB

cosB=cos(90−A)

⇒B=90−A⇒A+B=90

Hence, A+B=90

Answer 2

Answer:

B = 60°

Step-by-step explanation:

sin A + cos B = 1

sin 30° + cos B = 1

1/2 + cos B = 1

cos B = 1-1/2

cos B = 1/2

cos B = cos 60°

B = 60°

Hope it helps u.

Have a great day ahead

Annyeong