Practice focused topic-wise MCQs with answers and explanations for quick revision and exam preparation.
Difficulty select karke sirf is topic ke focused MCQs practice karein. Score, timer aur explanations student-friendly flow me milenge.
Showing 41-50 of 346 questions.
What is the value of \(\sin 90^\circ\)?
D. (1)
\(\sin 90^\circ=1\) होता है। मुख्य कोणों की तालिका से यह सीधा मान मिलता है। / \(\sin 90^\circ=1\). This value comes directly from the standard-angle table.
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What is the value of \(\cos 90^\circ\)?
A. (0)
\(\cos 90^\circ=0\) होता है। \(90^\circ\) पर \(\cos \theta\) शून्य हो जाता है। / \(\cos 90^\circ=0\). At \(90^\circ\), \(\cos \theta\) becomes zero.
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What is the value of \(\tan 0^\circ\)?
B. (0)
\(\tan 0^\circ=0\) होता है। \(\tan \theta=\frac{\sin \theta}{\cos \theta}\) से भी इसे जाँचा जा सकता है। / \(\tan 0^\circ=0\). It can also be checked using \(\tan \theta=\frac{\sin \theta}{\cos \theta}\).
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What is the value of \(\sec 0^\circ\)?
C. (1)
\(\sec 0^\circ=\frac{1}{\cos 0^\circ}=1\) होता है। व्युत्क्रम मान निकालते समय मूल फलन का मान पहले लिखें। / \(\sec 0^\circ=\frac{1}{\cos 0^\circ}=1\). While finding reciprocal values, first write the value of the basic function.
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What can \(\sin^2 \theta\) be written as?
A. \(1-\cos^2 \theta\)
\(\sin^2 \theta+\cos^2 \theta=1\) से \(\sin^2 \theta=1-\cos^2 \theta\) मिलता है। परीक्षा में मूल सर्वसमिका को पहले लिखें। / From \(\sin^2 \theta+\cos^2 \theta=1\), we get \(\sin^2 \theta=1-\cos^2 \theta\). In exams, write the basic identity first.
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What is \(\tan^2 \theta+1\) equal to?
B. \(\sec^2 \theta\)
\(\sec^2 \theta=1+\tan^2 \theta\) होता है। \(\tan \theta\) वाले प्रश्नों में \(\sec^2 \theta\) पहचानना उपयोगी है। / \(\sec^2 \theta=1+\tan^2 \theta\). In questions involving \(\tan \theta\), recognizing \(\sec^2 \theta\) is useful.
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What is the sign of \(\sin \theta\) in the first quadrant?
A. धनात्मकPositive
पहले चतुर्थांश में सभी त्रिकोणमितीय फलन धनात्मक होते हैं। परीक्षा में चतुर्थांश के चिह्न याद रखें। / In the first quadrant, all trigonometric functions are positive. Remember quadrant signs for exams.
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Which function is positive in the second quadrant?
B. \(\sin \theta\)
दूसरे चतुर्थांश में \(\sin \theta\) और \(\cosec \theta\) धनात्मक होते हैं। चिह्न नियम को याद रखने से ऐसे प्रश्न जल्दी हल होते हैं। / In the second quadrant, \(\sin \theta\) and \(\cosec \theta\) are positive. Knowing sign rules helps solve such questions quickly.
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What is the sign of \(\tan \theta\) in the third quadrant?
C. धनात्मकPositive
तीसरे चतुर्थांश में \(\tan \theta\) और \(\cot \theta\) धनात्मक होते हैं। चतुर्थांश के अनुसार चिह्न बदलता है। / In the third quadrant, \(\tan \theta\) and \(\cot \theta\) are positive. The sign changes according to the quadrant.
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Which function is positive in the fourth quadrant?
D. \(\cos \theta\)
चौथे चतुर्थांश में \(\cos \theta\) और \(\sec \theta\) धनात्मक होते हैं। संकेत नियम को छोटी तालिका से याद करें। / In the fourth quadrant, \(\cos \theta\) and \(\sec \theta\) are positive. Remember sign rules using a small table.
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