The circum-centre of the triangle formed by the lines \( x+4 y=7,5 x+3 y=1 \) and \( 3 x-5 y=21 ...
The circum-centre of the triangle formed by the lines \( x+4 y=7,5 x+3 y=1 \) and \( 3 x-5 y=21 \) is
(a) \( (-3,2) \)
(b) \( (3,1) \)
(c) \( (3,-1) \)
(d) \( (-3,-2) \)
📲PW App Link - https://bit.ly/YTAI_PWAP
🌐PW Website - https://www.pw.live
Other Videos By PW Solutions
| 2022-10-26 | For all values of \( \theta, 1+\cos \theta \) can be (a) positive (b) negative (c) non-positive |
| 2022-10-26 | If \( \sec \alpha+\tan \alpha=m \), then \( \sec ^{4} \alpha-\tan ^{4} \alpha-2 \) \( \sec \alph... |
| 2022-10-26 | If \( \sin ^{4} \theta-\cos ^{4} \theta=K^{4} \), then \( \sin ^{2} \theta-\cos ^{2} \theta \) i... |
| 2022-10-26 | In a \( \triangle A B C, \tan \left(\frac{A+C}{2}\right)= \)
(a) \( \tan \frac{B}{2} \)
(b) \( \... |
| 2022-10-26 | The value of \( \tan 15^{\circ} \tan 20^{\circ} \tan 70^{\circ} \tan 75^{\circ} \) is
(a) \( -1 ... |
| 2022-10-26 | If \( a=\sec \theta-\tan \theta \) and \( b=\sec \theta+\tan \theta \), then
(a) \( a=b \).
(b) ... |
| 2022-10-26 | Simplified expression of \( (\sec \theta+\tan \theta)(1-\sin \theta) \) is
(a) \( \sin ^{2} \the... |
| 2022-10-26 | A wheel makes 20 revolutions per hour. The radians it turns through 25 minutes is
(a) \( \frac{5... |
| 2022-10-26 | Prove that \( \sin ^{8} \theta-\cos ^{8} \theta=\cos 2 \theta\left(2 \sin ^{2} \theta \cos ^{2} ... |
| 2022-10-26 | If \( \sin A=\frac{3}{5} \) and \( A \) is not in the first quadrant, then find \( \frac{\cos A+... |
| 2022-10-26 | The circum-centre of the triangle formed by the lines \( x+4 y=7,5 x+3 y=1 \) and \( 3 x-5 y=21 ... |
| 2022-10-26 | \( \cos 50^{\circ} 50^{\prime} \cos 9^{\circ} 10^{\prime}-\sin 50^{\circ} 50^{\prime} \sin 9^{\c... |
| 2022-10-26 | Show that \( 6(\sin x+\cos x)^{4}+12(\sin x-\cos x)^{2}+ \) \( 8\left(\sin ^{6} x+\cos ^{6} x\ri... |
| 2022-10-26 | A vertical pole is \( 60 \mathrm{~m} \) high. The angles of depression of two points \( P \) and... |
| 2022-10-26 | If \( \sin \alpha=\frac{4}{5} \) and \( \cos \beta=\frac{4}{5} \), then which of the following i... |
| 2022-10-26 | If \( \sin x^{\circ}=\sin \alpha^{\circ} \), then \( \alpha \) is
(a) \( \frac{180}{\pi} \)
(b) ... |
| 2022-10-26 | If in a triangle \( A B C, A \) and \( B \) are complementary, then \( \tan C \) is
(a) \( \inft... |
| 2022-10-26 | Prove that
\[
\left(\frac{1-\sin \alpha}{\cos \alpha}+\frac{\cos \alpha}{1+\sin \alpha}\right)\l... |
| 2022-10-26 | If \( \operatorname{cosec} \theta-\cot \theta=2 \), then find the value of \( \operatorname{cose... |
| 2022-10-26 | The angle of depression of the top of the tower from the top of a building is \( 30^{\circ} \) a... |
| 2022-10-26 | Prove that \( \frac{\cot A+\operatorname{cosec} A-1}{\cot A-\operatorname{cosec} A+1}=\frac{1+\c... |
0