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What is the range of (\sec x)?(\sec x) का परिसर क्या है?
Answer and explanationउत्तर और व्याख्या
Correct answer:सही उत्तर: ((-\infty,-1]\cup[1,\infty))((-\infty,-1]\cup[1,\infty))
(\sec x=\frac{1}{\cos x}) and (\cos x) lies in ([-1,1]). Hence (\sec x) is greater than or equal to (1) or less than or equal to (-1).(\sec x=\frac{1}{\cos x}) है और (\cos x) का मान ([-1,1]) में होता है। इसलिए (\sec x) का मान (1) से बड़ा या (-1) से छोटा होता है।
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