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If 5 (tan2x – cos2x) = 2cos 2x + 9, then the value of cos 4x isa)-7/9b)-3/5c)1/3d)2/9Correct answer is option 'A'. Can you explain this answer? for JEE 2024 is part of JEE preparation. The Question and answers have been prepared according to the JEE exam syllabus. Information about If 5 (tan2x – cos2x) = 2cos 2x + 9, then the value of cos 4x isa)-7/9b)-3/5c)1/3d)2/9Correct answer is option 'A'. Can you explain this answer? covers all topics & solutions for JEE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for If 5 (tan2x – cos2x) = 2cos 2x + 9, then the value of cos 4x isa)-7/9b)-3/5c)1/3d)2/9Correct answer is option 'A'. Can you explain this answer?.

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