Math, asked by rohanmathias8389, 1 year ago

(tana+cota)2=cosecsquarea+secsquarea

Answers

Answered by sandy1816

1

Step-by-step explanation:

(tanA+cotA)²

=tan²A+cot²A+2tanAcotA

=(sec²A-1)+(cosec²A-1)+2

=cosec²A+sec²A+2-2

=cosec²A+sec²A

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