Question

If sin(alpha) = 4/5 and cos(beta ) = 5/13 . Find sin (alpha + beta)​

Answer 1

Answer:

sin(alpha) = 4/5

=> cos alpha = √(5²-4²)/√5² = 3/5

cos bheta = 5/13

=> sin bheta = √(13²-5²)/√13² = 12/13

sin(alpha+beta) =

sin(alpha)cos(beta) + sin(beta)cos(alpha)

=>4/5×5/13 + 12/13×3/5

=>4/13+36/65

=>(20+36)/65

=>56/65

Answer 2

Answer:

63738

Step-by-step explanation:

hope it's help you