If sec 4A=cosec ( A-20),where 4A is an acute angle,find the value of A

1.	If sec 4A=cosec ( A-20),where 4A is an acute angle,find the value of A..
Answer» Bhai plz abhi bhi confusion hai A=22 A=22 not 55 Cosec(90-4A)=cosec(A-20)90-4A=A-2090+20=A+4A110=5A110/5=A55=A

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