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सिद्ध कीजिए। tan4θ + tan2θ = sec4θ - sec2θ - Mathematics 2 - Geometry [गणित २ - ज्यामिति]

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Question

सिद्ध कीजिए। 

tan4θ + tan2θ = sec4θ - sec2θ 

Sum

Solution

बायाँ पक्ष = tan4θ + tan2θ

= `tan^2theta(tan^2theta + 1)`

= `tan^2theta xx sec^2theta` ......`[∵ 1 + tan^2theta = sec^2theta]`

= `(sec^2theta - 1) xx sec^2theta` .........`[(∵ 1 + tan^2theta = sec^2theta),(∴ sec^2theta - 1 = tan^2theta)]`

= `sec^4theta - sec^2theta`

= दायाँ पक्ष

∴ बायाँ पक्ष = दायाँ पक्ष

∴ tan4θ + tan2θ = sec4θ - sec2θ

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त्रिकोणमितीय सर्वसमिकाएँ
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Chapter 6: त्रिकोणमिति - प्रकीर्ण प्रश्नसंग्रह 6 [Page 138]

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Balbharati Geometry (Mathematics 2) [Hindi] 10 Standard SSC Maharashtra State Board
Chapter 6 त्रिकोणमिति
प्रकीर्ण प्रश्नसंग्रह 6 | Q 5. (5) | Page 138
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