Question

​ ​​ + ​​ ​​ = 1, ​​ = 60° and B is an acute angle, then find the value of B.

Answer 1

Step-by-step explanation:

Sin 30˚ + Cos B = 1

1212+ Cos B = 1

Cos B = 1/2 1/2

B = 60˚