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Please solve the question and tell me suitable tricks

Sitanshu Yadav , 5 Years ago
Grade 11
anser 1 Answers
Saurabh Koranglekar

Last Activity: 4 Years ago

Dear student

Assume x to be 0

equation becomes

cos(y), 1, cos(y) are in HP

ie cos y =1

sec (y/2) = ± 1

Kindly confirm the answer

Regards

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