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If alpha,beta,gama,delta are in progression thenCos beta is equal to

If alpha,beta,gama,delta are in progression thenCos beta is equal to

Grade:11

1 Answers

kshirsagaryashraj@gmail.com
12 Points
3 years ago
Bro ,but in which progressionArithmetic or geometric or harmonic ...If in arithmetic progression then Cos(beta) = cos(alpha+gamma /2)

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