Math, asked by gurvir78, 1 year ago

evaluate this question so that i can give my exam tommorow

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Answered by kirtiprasanjenpchfhd

1

hope it helps u......

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gurvir78: bro you are great

kirtiprasanjenpchfhd: thanks..

gurvir78: pleasure

Answered by Rose28J

1

sin 18/ cos 72

we know,

sinθ=cos(90-θ)

sin18 can be written as cos (90-18)= cos72

hence , cos72/cos72= 1

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