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Grade 11Trigonometry

Find general solution of the equation
2(1+|cosx|+|cosx|2+ …...............inf) = 2

Profile image of Kawal
11 Years agoGrade 11
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1 Answer

Profile image of Jitender Singh
ApprovedApproved Tutor Answer11 Years ago
Ans:Hello student, please find answer to your question
2^{(1+|cosx| + |cosx|^{2}+.....................\infty )} = 2
2^{(\frac{1}{1-|cosx|})} = 2
\frac{1}{1-|cosx|} = 1
1-|cosx| = 1
|cosx| = 0
cosx = 0
x = 2n\pi \pm \frac{\pi }{2}

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