Math, asked by sowmya1451, 1 year ago

Evaluate cosec39 sec51 - tan51 cot39

Answers

Answered by sachin2631

10

we have

= cosec39sec51-tan51cot39

= cosec(90-39)sec51-tan51cot(90-39

= sec51²-tan51²

=1 {using sec²x-tan²x=1}

I hope it is helpful to you

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