Question

if sinA= 3/5 and cosB= 5/13 find sin(A+B)​

Answer 1

Answer:

Sin A = 3/5

CosA = 4/5

CosB = 5/13

SinB = 12/13

sin(A+B) = SinA*CosB + CosA*SinB

= 3/5* 5/13 + 4/5*12/13

= 15/65 + 48/65

= 63/65