Question

Sin A + Cos B = 1, A = 30degree and B is an acute angle, find the value of B.

Do it fast☺︎︎
​

Answer 1

A=30
So sin 30=1/2( we know it)
So, 1/2+cosB=1
CosB=1-1/2
CosB=1/2
( now, we know that cos60 =1/2)
So, B=60degree

Answer 2

Answer:

Sin 30˚ + Cos B = 1

1 2 + Cos B = 1

Cos B = 1 upon 2

B = 60˚

Step-by-step explanation:

hope it is helpful for you and please mark me brainiest please follow and give lots of thanks also