Math, asked by TannushreeKaushik, 12 hours ago

Cos 70°/Sin 20° + Cos 69° Cosec 21°

Answers

Answered by pradeepjanwa

0

Answer:

2

Step-by-step explanation:

cos(90-20) / sin 20 + cos (90-21) cosec 21

sin 20 / sin 20 + cosec 21 / cosec 21

1+1

2

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