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What is the value of the identity (\sin^2 x+\cos^2 x)?पहचान (\sin^2 x+\cos^2 x) का मान क्या है?
Answer and explanationउत्तर और व्याख्या
Correct answer:सही उत्तर: 11
The fundamental Pythagorean trigonometric identity is \(\sin^2 x+\cos^2 x=1\). Therefore, the correct value is 1. Note that \(\sec^2 x=1+\tan^2 x\), so it is not the value of this expression. Exam tip: whenever you see \(\sin^2 x+\cos^2 x\), replace it with 1.मूल पायथागोरीय त्रिकोणमितीय पहचान \(\sin^2 x+\cos^2 x=1\) है। अतः सही मान 1 है। \(\sec^2 x\) की पहचान \(1+\tan^2 x\) के बराबर होती है, इसलिए वह यहाँ सही नहीं है। परीक्षा टिप: \(\sin^2 x+\cos^2 x\) दिखते ही उसका मान 1 लिखें।
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