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If sec (a+b) + sec(a-b)=2seca and cosb not equal to 1 , then show that cos0=+or-root under 2 multiplied by cosa/2

If sec (a+b) + sec(a-b)=2seca and cosb not equal to 1 , then show that cos0=+or-root under 2 multiplied by cosa/2

Grade:

1 Answers

Saurabh Koranglekar
askIITians Faculty 10341 Points
one year ago
Dear student

Please attach the question's image or source so that it is clear what is to be proved Is it cos (a/2) or ( cos a )/2

Regards

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