Question

Cos A + Sin B = 1; A=60° and B is an acute angle, then find the value

of B​

Answer 1

Answer:

Step-by-step explanation:

Cos A + Sin B = 1

A=60

so cos 60+sinB=1

1/2+sinB=1

sinB=1-1/2=1/2

sin B= sin30

B=30°

Answer 2

sin A + cos B= 1

sin30° + cos B = 1

1/2 + cos B = 1

cos B = 1 - 1/2

cos B = cos 60°

this, B = 60°