Question

sin alpha is equal to 1 by 2 then cos beta is equal to 1 by 2 then find alpha + beta​

Answer 1

sin alpha = 1/2

cos beta =1/2

since we know that sin 30°= 1/2

hence alpha =30°

and cos 60°= 1/2

hence beta = 60°

therefore alpha + beta is equal to 90°

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Answer 2

Answer:

Refers to the attachment....