Math, asked by niyatiAfonso, 6 months ago

b) cos 20° x cos 50° x cosec 70° X cosec 40° = 1

Answers

Answered by avijitds93

0

Answer:

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Answered by dcboy

0

Step-by-step explanation:

cosec 70=1/cos 20

cosec 40=1/cos 50

Hence everything cancels out and you are left with one.

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