In \( \triangle A B C, b c=2 b^{2} \cos A+2 c^{2} \cos A-4 b c \cos ^{2} A \), then \( \triangle...

Channel:
PW Solutions
Subscribers:
445,000
Published on ● Video Link: https://www.youtube.com/watch?v=PfSRf-wtUWA


Duration: 9:18
5 views
0

In \( \triangle A B C, b c=2 b^{2} \cos A+2 c^{2} \cos A-4 b c \cos ^{2} A \), then \( \triangle A B C \) is
(A) isosceles but not necessarily equilaterial
\( \mathrm{P} \)
(B) equilateral
W
(C) right angled but not neccessarily isosceles
(D) right angled isosceles
📲PW App Link - https://bit.ly/YTAI_PWAP
🌐PW Website - https://www.pw.live



Other Videos By PW Solutions


2023-02-14Match appropriately column I and column II Column I Column II (a) N...
2023-02-14Two \( \mathrm{H} \) atoms in the ground state collide inelasticall...
2023-02-14A force \( F \) acts tangentially at the highest point of a disc of mass \( m \mathrm{kept} \) o...
2023-02-14Relativistic corrections become neccssary when the expression \( \m...
2023-02-14Match appropriately column I and column II Column I Column II (a) E...
2023-02-14A disc is freely rotating with an angular speed \( \omega \) on a smooth horizontal plane. If it...
2023-02-14Let ' \( a \) ' be a real number such that the function \( f(x)=a x...
2023-02-14Two discs, each having moment of inertia \( 5 \mathrm{~kg} \mathrm{~m}^{2} \) about its central ...
2023-02-14For the ground state, the electron in the \( \mathrm{H} \)-atom has...
2023-02-14\( \mathrm{O}_{2} \) molecule consists of two oxygen atoms. In the ...
2023-02-14In \( \triangle A B C, b c=2 b^{2} \cos A+2 c^{2} \cos A-4 b c \cos ^{2} A \), then \( \triangle...
2023-02-14Function \( f(x)=\frac{\lambda \sin x+6 \cos x}{2 \sin x+3 \cos x} ...
2023-02-14Match appropriately column I and column II Column I Column II (a) G...
2023-02-14Given two straight lines \( A B \) and \( A C \) whose equations are \( 3 x+4 y=5 \) and \( 4 x-...
2023-02-14Match appropriately column I and column II Column I Column II (a) E...
2023-02-14Photons absorbed in matter are converted to heat. A source emitting...
2023-02-14The function \( f(x)=x^{3}-27 x+8 \) is increasing when (a) \( |x|3...
2023-02-14Match appropriately column I and column II Column I Column II (a) E...
2023-02-14A particle moves in a closed orbit around the origin, due to a forc...
2023-02-14\( f(x)=\sin x \) is increasing in (a) \( \left(\frac{\pi}{2}, \pi\...
2023-02-14If a rigid body rolls on a surface without slipping, then (1) linear speed is maximum at the hig...