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If (\sec \theta=2) and (\theta) is in the first quadrant, what is (\cos \theta)?यदि (\sec \theta=2) और (\theta) प्रथम चतुर्थांश में है, तो (\cos \theta) का मान क्या है?
Answer and explanationउत्तर और व्याख्या
Correct answer:सही उत्तर: (\frac{1}{2})(\frac{1}{2})
( \sec \theta=\frac{1}{\cos \theta}), so ( \cos \theta=\frac{1}{2}). In exams remember reciprocal relations.(\sec \theta=\frac{1}{\cos \theta}), इसलिए (\cos \theta=\frac{1}{2}) है। परीक्षा में reciprocal relations याद रखें।
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