Grade 12Trigonometry
FIND THE GENERAL SOLUTION OF THE EQUATION COS X COS 6X = −1
FIND THE GENERAL SOLUTION OF THE EQUATION COS X COS 6X = −1
1 Answer
SAGAR SINGH - IIT DELHI
Dear student,
write cos6x as cos3(2x) and then use the formula for cos3theta
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Sagar Singh
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