tan^A+cot^A+2 = sec^A. cosec^A
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Step-by-step explanation:
drg
tan ² Ф + 1 = sec ² Ф
cot ² Ф + 1 = co sec ² Ф
Adding,
tan ² Ф + cot ² Ф + 2 = sec ² Ф + co sec ² Ф
= 1/ cos ² Ф + 1/sin ² Ф
= sin² Ф + cos²Ф / sin ²Ф .cos ²Ф
= 1/ sin ²Ф cos ²Ф
= cos e c ²Ф . s e c ²Ф
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