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Grade 11Trigonometry

S=cos(2pi/28)csc(3pi/28)+cos(6pi/28)csc(9pi/28)+cos(18pi/28)csc(27pi/28)
Find the value of S plz ASAP

Profile image of Hero Lal
8 Years agoGrade 11
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1 Answer

Profile image of Anish Singhal
8 Years ago
Is answer zero?