Math, asked by uday8080, 11 months ago

If Sin A+ Sin B= 13(cos B - cos A) then
Sin 3A + Sin 3B =?

Answers

Answered by skhaasin9966gmailcom

1

Step-by-step explanation:

sinA+sinB=13(cosB-cosA)

sin3A+sin3B=39(cosB-cosA)

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