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Θθ1secθ-tanθ = secθ + tanθ - Mathematics 2 - Geometry [गणित २ - भूमिती]

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Question

`1/(secθ - tanθ)` = secθ + tanθ

Sum
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Solution

डावी बाजू = `1/(secθ - tanθ)`

= `1/(secθ - tanθ) xx (secθ + tanθ)/(secθ + tanθ)` ......[छेदाचे परिमेयकरण करून]

= `(secθ + tanθ)/(sec^2θ - tan^2θ)`

= `(secθ + tanθ)/1` ....`[(∵ 1 + tan^2θ = sec^2θ),(∴ sec^2θ - tan^2θ = 1)]`

= secθ + tanθ

= उजवी बाजू

∴ `1/(secθ - tanθ)` = secθ + tanθ 

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त्रिकोणमितीय नित्यसमानता
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Chapter 6: त्रिकोणमिती - सरावसंच 6.1 [Page 132]

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Balbharati Ganit 2 [Marathi] Standard 10 Maharashtra State Board
Chapter 6 त्रिकोणमिती
सरावसंच 6.1 | Q 6. (6) | Page 132
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