Math, asked by vivekkumarraj6671, 1 year ago

Evaluate: cosec 13°/ sec 77° - cot 20°/tan 70°

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Answered by Vansh1712

5

cosec(90-77)°/sec 77° -cot(90-70)°/tan70°
sec77°/sec77°-tan70°/tan70°
=1-1=0

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