find the value of cot 10.cot 30.cot 80
Answers
Answered by
10
Cot10*Cot30*Cot80 = tan80*Cot30*Cot80. {cot(90-@) = tan@}
= Cot30
= √3
= Cot30
= √3
Answered by
10
cotx= tan(90-x) -equation (1)
cotx.tanx=1 -equation (2)
cot30.[tan(90-10).cot80]
= √3 .(1)
= √3
cotx.tanx=1 -equation (2)
cot30.[tan(90-10).cot80]
= √3 .(1)
= √3
Similar questions