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if sec(x+a)+sec(x-a) =2 secx then show that cos ^2 x= 1+ cosa

if sec(x+a)+sec(x-a) =2 secx then show that cos ^2 x= 1+ cosa

Grade:12th pass

1 Answers

Deepak Kumar Shringi
askIITians Faculty 4404 Points
6 years ago
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