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tan²A+cot²A+2=sec²A cosec²A

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tan²A+cot²A+2=sec²A cosec²A

  • 1 answers

Sukdeb Mukherjee 6 years, 11 months ago

tan2a + cot2a + 2

= sec2a - 1 + cosec2a - 1 + 2

= sec2a - 2+2 + cosec2a

=sec2a + cosec2a

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