If \( \alpha, \beta, \gamma \) are acute angles and \( \cos \theta=...

Channel:
PW Solutions
Subscribers:
453,000
Published on ● Video Link: https://www.youtube.com/watch?v=IwRs-lRQar4


Duration: 10:28
17 views
0

If \( \alpha, \beta, \gamma \) are acute angles and \( \cos \theta=\frac{\sin \beta}{\sin \alpha} \),
P \( \cos \phi=\frac{\sin \gamma}{\sin \alpha} \) and \( \cos (\theta-\phi)=\sin \beta \sin \gamma \), then

W \( \tan ^{2} \alpha-\tan ^{2} \beta-\tan ^{2} \gamma \) is equal to
(a) \( -1 \)
(b) 0
(c) 1
(d) None of these
📲PW App Link - https://bit.ly/YTAI_PWAP
🌐PW Website - https://www.pw.live



Other Videos By PW Solutions


2023-02-16A rod of length \( 50 \mathrm{~cm} \) is pivoted at one end. It is ...
2023-02-16\( \mathrm{P} \) Which of the following does not illustrate the ano...
2023-02-16(a) Linear (b) Square planar (c) Trigonal planar (d) Capped octahedral \( \mathrm{P} \) W
2023-02-16If \( \cos ^{4} \theta \sec ^{2} \alpha, \frac{1}{2} \) and \( \sin...
2023-02-16A cubical block of side \( a \) moving with velocity \( v \) on a h...
2023-02-16\( \mathrm{P} \) Bone ash contains W (A) \( \mathrm{CaO} \) (B) \( ...
2023-02-16A slab is subjected to two forces \( \mathbf{F}_{1} \) and \( \math...
2023-02-16\( \mathrm{P} \) The stable superoxide is formed by the element (A)...
2023-02-16A smooth sphere \( A \) is moving on a frictionless horizontal plan...
2023-02-16\[ \mathrm{N}_{2} \mathrm{O}_{4}(\mathrm{~g}) \rightleftharpoons 2 \mathrm{NO}_{2}(\mathrm{~g}) ...
2023-02-16If \( \alpha, \beta, \gamma \) are acute angles and \( \cos \theta=...
2023-02-16\( \mathrm{P} \) Four alkali metals A, B, C and D are having respec...
2023-02-16The nodal plane in the \( \pi \)-bond of ethene is located in : (a) the molecular plane (b) a pl...
2023-02-16\[ \mathrm{N}_{2}+3 \mathrm{H}_{2} \rightleftharpoons 2 \mathrm{NH}_{3} \] Which is correct stat...
2023-02-16\( A B \) is a double ordinate of the parabola \( y^{2}=4 a x \). T...
2023-02-16The pair of species with similar shape is : (a) \( \mathrm{PCl}_{3}, \mathrm{NH}_{3} \) (b) \( \...
2023-02-16\( \mathrm{P} \) Which one of the following is most basic ? W (A) \...
2023-02-16\( A B \) is a double ordinate of the parabola \( y^{2}=4 a x \). T...
2023-02-16\( \mathrm{P} \) Which of the following imparts violet colouration ...
2023-02-16The volume of the greatest cylinder which can be inscribed in a con...
2023-02-16Which of the following statements is correct in the context of the allene molecule, \( \mathrm{C...


Tags:
pw