English, asked by charanvetrivel, 1 year ago

pls tell the rigt answer​

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Answered by Anonymous
1

Answer:

sec 4a = cosec (a-20)

cosec [90-(4a)]=cosec(a-20)

therefore, 90-4a=a-20

= 90+20=a+4a

=110=5a

therefore, a=110/5

a=22

Hope This helped You!

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