Question

if sina =3/5 sinb=4/5 then sin(a+b)​

Answer 1

cosA=4/5

cosB=3/5

sin(a+b)=sina× cosb+cosa xsinb

3/5×3/5+4/5×4/5

25/25=1

please follow me

Answer 2

Answer:

7/5

Step-by-step explanation:

Sina =3/5 and sinb=4/5

Sin(a+b)=3/5+5/5

=7/5

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