If \( \mathrm{x}=\mathrm{a} \sec \theta \cos \phi, \mathrm{y}=\mathrm{b} \sec \theta \sin \phi \...
If \( \mathrm{x}=\mathrm{a} \sec \theta \cos \phi, \mathrm{y}=\mathrm{b} \sec \theta \sin \phi \) and \( z=c \tan \theta \), then \( \frac{x^{2}}{a^{2}}+\frac{y^{2}}{b^{2}}= \)
a. \( \frac{\mathrm{z}^{2}}{\mathrm{c}^{2}}+\mathrm{a}^{2} \)
b. \( 1-\frac{\mathrm{z}^{2}}{\mathrm{c}^{2}} \)
c. \( \frac{z^{2}}{c^{2}}-1 \)
d. \( 1+\frac{\mathrm{z}^{2}}{\mathrm{c}^{2}} \)
📲PW App Link - https://bit.ly/YTAI_PWAP
🌐PW Website - https://www.pw.live
Other Videos By PW Solutions
| 2023-07-14 | If \( \theta \) is an acute angle, then \( \sin \left(90^{\circ}-\theta\right) \) \( =\cos \thet... |
| 2023-07-14 | Equations like \( \sin ^{2} \theta+\cos ^{2} \theta=1 \) and \( 1+\tan ^{2} \) \( \theta=\sec ^{... |
| 2023-07-14 | In the following Questions, the Assertion and Reason have been put forward. Read the statements ... |
| 2023-07-14 | In the following Questions, the Assertion and Reason have been put forward. Read the statements ... |
| 2023-07-14 | In the following Questions, the Assertion and Reason have been put forward. Read the statements ... |
| 2023-07-14 | In the following Questions, the Assertion and Reason have been put forward. Read the statements ... |
| 2023-07-14 | In the following Questions, the Assertion and Reason have been put forward. Read the statements ... |
| 2023-07-14 | If angles \( \mathrm{A}, \mathrm{B} \) and \( \mathrm{C} \) of a \( \triangle \mathrm{ABC} \) fo... |
| 2023-07-14 | If \( \sin \theta+\cos \theta=p \), then the value of \( \sin ^{2} \theta+\cos ^{4} \) \( \theta... |
| 2023-07-14 | If \( \frac{\sin ^{4} \theta}{a}+\frac{\cos ^{4} \theta}{b}=\frac{1}{a+b} \), the value of \( \f... |
| 2023-07-14 | If \( \mathrm{x}=\mathrm{a} \sec \theta \cos \phi, \mathrm{y}=\mathrm{b} \sec \theta \sin \phi \... |
| 2023-07-14 | If \( \mathrm{a} \cos \theta+\mathrm{b} \sin \theta=\mathrm{m} \) and \( \mathrm{a} \sin \theta-... |
| 2023-07-14 | Given \( 3 \sin \alpha+5 \cos \alpha=5 \), then the value of \( (3 \cos \alpha-5 \sin \alpha)^{2... |
| 2023-07-14 | If \( 3 \sin \theta+5 \cos \theta=5 \), then the value of \( 5 \sin \theta-3 \) \( \cos \theta \... |
| 2023-07-14 | If \( \left(a^{2}-b^{2}\right) \sin \theta+2 a b \cos \theta=a^{2}+b^{2} \), then the value of \... |
| 2023-07-14 | For \( 0^{\circ} \leq \theta \leq 90^{\circ} \), following equality holds \( \tan ^{2} \) \( \th... |
| 2023-07-14 | The value of \( \frac{\sin x}{\sec x+\tan x-1}+\frac{\cos x}{\operatorname{cosec} x+\cot x-1} \)... |
| 2023-07-14 | \( \frac{1-\cos \theta}{1+\cos \theta} \) is equal to
a. \( (\operatorname{cosec} \theta+\cot \t... |
| 2023-07-14 | \( \frac{\tan ^{2} \theta}{1+\sec \theta}+1 \) equals to
a. \( \tan \theta \)
b. \( \frac{1}{\co... |
| 2023-07-14 | The value of \( \sin ^{2} 15^{\circ}+\sin ^{2} 30^{\circ}+\sin ^{2} 45^{\circ}+\sin ^{2} 60^{\ci... |
| 2023-07-14 | The value of \( \sec ^{2} \mathrm{~A} \tan ^{2} \mathrm{~B}-\tan ^{2} \mathrm{~A} \sec ^{2} \mat... |
0