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If a1 a2 …....an be anusha AP with common difference d then (sec a1*sec a2)+ (sec a2*sec a3)+.........+(sec an-1*sec an)=

If a1 a2 …....an be anusha AP with common difference d then (sec a1*sec a2)+ (sec a2*sec a3)+.........+(sec an-1*sec an)=

Grade:12

1 Answers

Sreenath
14 Points
3 years ago
Sorry it is an AP.

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