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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

meghana p , 6 Years ago
Grade
anser 1 Answers
Saurabh Koranglekar
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
Last Activity: 6 Years ago
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