= p then Prove that tancot - – InterviewSolution

1.	= p then Prove that tancot -
Answer» cot pi/16. cot 2pi/16. cot3pi/16. cot4pi/16. cot5pi/16. cot6pi/16. cot7pi/16= cot(pi/2-7pi/16)cot(pi/2-5pi/16)cot(5pi/16)cot(5pi/16)cot(7pi/16)=tan(7pi/16) tan(5pi/16)cot(5pi/16)cot(5pi/16)=( (1/cot(7pi/16)(1/ cot5pu/16)cot5pi/16)=cot(5pi/16)cot(7pi/16)= cot(5pi/16) answer

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