Question

sin A + cos B = 1,
Given that: A=30° find: B​

Answer 1

Answer: B = 60

Step-by-step explanation:

Answer:

The value of B is 60°

Step-by-step explanation:

Given:-

sin A + cos B = 1

We know A= 30°

So,

sin30° + cos B= 1

1/2 + cos B=1

cos B= 1/2

cos B = cos 60

B = 60°

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

So, B = 60° as cos 60°=1/2

Hope this will help you!

Remember the values of cos and sin when angles are 0°,30°,45°,60° and 90°. It's important for solving problems.