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Tan thita/secthita-1+tan thita/secthita+1=2cosecthita

Tan thita/secthita-1+tan thita/secthita+1=2cosecthita

Grade:10

1 Answers

Shashank Singh
askIITians Faculty 57 Points
3 years ago
tan thita(sec thita +1)/(sec^2thita -1) + tan thita (secthita-1)/ (sec^2thita-1)
(tanthita secthita + tan thita + tanthta sec thita – tanthita)/tan^2thita
= 2secthita/tanthita
=2/sinthita= 2cosec thita...... [hence proved]

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