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 251-260 of 346 questions.
If \(\sin^2 \theta+\cos^2 \theta=k\), what is the value of (k)?
C. (1)
मूल सर्वसमिका \(\sin^2 \theta+\cos^2 \theta=1\) है। परीक्षा में इसे सबसे पहले जांचें। / The basic identity is \( \sin^2 \theta+\cos^2 \theta=1\). In exams check this first.
Login to save your score, XP, coins and progress.
What is the simplified value of \(\sec^2 \theta-\tan^2 \theta\)?
A. (1)
\(\sec^2 \theta=1+\tan^2 \theta\) से अंतर (1) मिलता है। परीक्षा में identity को rearrange करें। / From \( \sec^2 \theta=1+\tan^2 \theta\), the difference is (1). In exams rearrange the identity.
Login to save your score, XP, coins and progress.
If \(\theta\) is in the first quadrant and \(\sin \theta=\frac{5}{13}\), what is \(\cos \theta\)?
A. \(\frac{12}{13}\)
\(\cos^2 \theta=1-\sin^2 \theta=\frac{144}{169}\) और प्रथम चतुर्थांश में मान धनात्मक है। परीक्षा में quadrant sign न भूलें। / \( \cos^2 \theta=1-\sin^2 \theta=\frac{144}{169}\), and in the first quadrant it is positive. In exams do not forget quadrant sign.
Login to save your score, XP, coins and progress.
If \(\theta\) is in the second quadrant and \(\cos \theta=-\frac{3}{5}\), what is \(\sin \theta\)?
B. \(\frac{4}{5}\)
\(\sin^2 \theta=1-\cos^2 \theta=\frac{16}{25}\) और द्वितीय चतुर्थांश में \(\sin \theta\) धनात्मक है। परीक्षा में ASTC नियम काम आता है। / \( \sin^2 \theta=1-\cos^2 \theta=\frac{16}{25}\), and \(\sin \theta\) is positive in the second quadrant. In exams ASTC rule helps.
Login to save your score, XP, coins and progress.
If (\tan\(-\theta\)=m), then (m) equals what?
B. \(-\tan \theta\)
\(\tan \theta\) विषम फलन है इसलिए (\tan\(-\theta\)=-\tan \theta)। परीक्षा में sign बदलने पर ध्यान दें। / \( \tan \theta\) is an odd function, so ( \tan\(-\theta\)=-\tan \theta). In exams focus on sign change.
Login to save your score, XP, coins and progress.
What is the value of (\sin\(\pi-\theta\))?
C. \(\sin \theta\)
\(\pi-\theta\) द्वितीय चतुर्थांश में आता है और sine धनात्मक रहता है। परीक्षा में allied angle formula याद रखें। / \( \pi-\theta\) lies in the second quadrant and sine remains positive. In exams remember allied angle formulas.
Login to save your score, XP, coins and progress.
What is the value of (\cos\(\pi-\theta\))?
A. \(-\cos \theta\)
\(\pi-\theta\) द्वितीय चतुर्थांश में है जहां cosine ऋणात्मक होता है। परीक्षा में चतुर्थांश का चिन्ह जरूर लगाएं। / \( \pi-\theta\) is in the second quadrant where cosine is negative. In exams always apply quadrant sign.
Login to save your score, XP, coins and progress.
What is the value of (\tan\(\pi-\theta\))?
B. \(-\tan \theta\)
\(\pi-\theta\) द्वितीय चतुर्थांश में है और tangent ऋणात्मक होता है। परीक्षा में tangent के sign पर विशेष ध्यान दें। / \( \pi-\theta\) is in the second quadrant and tangent is negative. In exams pay special attention to the sign of tangent.
Login to save your score, XP, coins and progress.
What is the value of (\sin\(\pi+\theta\))?
B. \(-\sin \theta\)
\(\pi+\theta\) तृतीय चतुर्थांश में है जहां sine ऋणात्मक होता है। परीक्षा में allied angle पहचानना जरूरी है। / \( \pi+\theta\) is in the third quadrant where sine is negative. In exams identifying allied angles is important.
Login to save your score, XP, coins and progress.
What is the value of (\cos\(\pi+\theta\))?
C. \(-\cos \theta\)
\(\pi+\theta\) तृतीय चतुर्थांश में है और cosine ऋणात्मक होता है। परीक्षा में sign table तुरंत याद करें। / \( \pi+\theta\) is in the third quadrant and cosine is negative. In exams recall the sign table quickly.
Login to save your score, XP, coins and progress.
Use Google login or mobile OTP. Admin can block users and control login providers.