if cos alpha =3/5 and cosbeta =5/13 then prove that sin^(alpha-betha)/2 =1/65
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is there sin pe power alpga betha by 2 or other then
mohammedmussu8:
ur name
Anupam
hmm
u can inbox
me if ur interested
ya
but I'm bad
am waiting
20 thnx phle
done
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