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8x = π prove that cos7x + cotx=0

8x = π prove that cos7x + cotx=0

Grade:11

1 Answers

kopparapu gnana chaitanya prakash
19 Points
5 years ago
in the question cos should be replaced by cot.
7x+x=pi;
cot(7x+x)=cot(pi);
(cot(7x)cot(x)-1)/cot(7x)+cot(x)   =1/0;
cot(7x)+cot(x) =0.

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