If sin theta= k sin beta prove that tan(theta-beta/2)=k-1/k+1 tan(theta+beta)2.

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These are the multiples of 15 but what you are probably asking or what are the factors of 15

I’m pretty sure the * means multiplication. so, if you multiply 5*1, it would equal 5. they are basically are-writing 5x1 as 5*1. so they would be… 5 10152025303540455055