Math, asked by yogeshshahimuz, 10 months ago

17. ?
1, 1+ tan’e
1 + cot’e
(1-tan
= tan20
1-cot o) -​

Answers

Answered by jubyshaji76
1

tanA1−cotA+cotA1−tanA=sinAcosA1−cosAsinA+cosAsinA1−sinAcosA  

=sin2AcosA(sinA−cosA)+cos2AsinA(cosA−sinA)

=sin3A−cos3AcosAsinA(sinA−cosA)

=sin2A+cosAsinA+cos2AcosAsinA

=1+cosAsinAcosAsinA

=1+secAcscA.■

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