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9966 [12]
3 years ago
11

Trig help ..............

Mathematics
1 answer:
Vilka [71]3 years ago
5 0
SinA = 3/5
cosA = 4/5

cosB = 3/5
sinB = 4/5


sin(A+B) = sinAcosB + cosAsinB

= (3/5)(3/5) + (4/5)(4/5)
= 9/25 + 16/25
=(9+16)/25
=25/25
=1

therefore, the answer is B
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Answer:

Step-by-step explanation:

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