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cot9*cot27*cot45*cot63*cot81
i need this problem to be solved

chaitanya sai , 8 Years ago
Grade 9
anser 1 Answers
Manashi lodha
(cot 9*cot 81)(cot 27*cot 63)(cot 45)=(Cot 9*cot(90-9))(cot 27*cot(90-27))cot 45=(cot 9 *tan9)(cot 27*tan27)(cot 45)=cot 45=1(ans)
Last Activity: 8 Years ago
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