Question

is sin a is equal to 1 by 2 and Cos beta is equal to 1 by 2 then a + b​

Answer 1

Question: If sin A = 1/2 and Cos B = 1/2 then A + B = ?

sin A = 1/2

But we know, sin 30° = 1/2

So sin A = sin 30°

On comparing we get, A = 30°

Now,

cos B = 1/2

But we know that, Cos 60° = 1/2

So, cos B = cos 60°

On comparing we get, B = 60°

So,

=> A + B

=> 30° + 60°

=> 90°

Answer: 90