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सिद्ध कीजिए। cot2θ - tan2θ = cosec2θ - sec2θ - Mathematics 2 - Geometry [गणित २ - ज्यामिति]

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Question

सिद्ध कीजिए। 

cot2θ - tan2θ = cosec2θ - sec2θ 

Sum

Solution

बायाँ पक्ष = cot2θ - tan2θ

= `(cosec^2theta - 1) - (sec^2theta - 1)` ......`[(because cosec^2theta = 1 + cot^2theta),(therefore cot^2theta = cosec^2theta - 1),(because sec^2theta = 1 + tan^2theta),(therefore tan^2theta = sec^2theta - 1)]`

= `cosec^2theta - 1 - sec^2theta + 1`

= `cosec^2theta - sec^2theta`

= दायाँ पक्ष

∴ बायाँ पक्ष = दायाँ पक्ष

∴ cot2θ - tan2θ = cosec2θ - 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. (4) | Page 138
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