If in a \( \triangle A B C, a \cos ^{2}\left(\frac{C}{2}\right)+\cos ^{2}\left(\frac{A}{2}\right.... VIDEO
If in a \( \triangle A B C, a \cos ^{2}\left(\frac{C}{2}\right)+\cos ^{2}\left(\frac{A}{2}\right)=\frac{3 b}{2} \), then the sides \( \mathrm{a}, \mathrm{b} \) and \( c \)
(1) satisfy \( a+b=\mathrm{c} \)
(2) are in A.P
(3) are in G.P
(4) are in H.P
š²PW App Link - https://bit.ly/YTAI_PWAP
šPW Website - https://www.pw.live
Other Videos By PW Solutions 2024-01-21 If \( (a-b)(s-c)=(b-c)(s-a) \), then \( r_{1}, r_{2}, r_{3} \) are in.... 2024-01-21 If \( \cos A+2 \cos B+4 \cos C=2 \), then the sides of the triangle \( A B C \) are in-.... 2024-01-21 In a triangle \( A B C \), if the median and altitude from
\( A \) trisect angle \( A \), then \.... 2024-01-21 If \( \frac{r}{r_{1}}=\frac{r_{2}}{r_{3}} \), then.... 2024-01-21 In a \( \quad \triangle \mathrm{ABC} \) if \( 2 s=a+b+c \quad \) and \( (s-b)(s-c)=x \sin ^{2} \.... 2024-01-21 If the angles \( A, B \) and \( C \) of a triangle are in an arithmetic progression and if \( a,.... 2024-01-21 In any \( \triangle A B C \), if a \( \cos B=b \cos A \), then the
triangle is.... 2024-01-21 In \( \triangle A B C \), if \( \operatorname{ar}(\triangle A B C)=8 \). Then, \( a^{2} \sin (2 .... 2024-01-21 If in a triangle \( A B C, \Delta=a^{2}-(b-c)^{2} \), then \( \tan A \) is equal to.... 2024-01-21 The angles A, B and C of a triangle ABC are in A.P. and \( a: b=1: \sqrt{3} \). If \( c=4 \mathr.... 2024-01-21 If in a \( \triangle A B C, a \cos ^{2}\left(\frac{C}{2}\right)+\cos ^{2}\left(\frac{A}{2}\right.... 2024-01-21 In triangle \( \mathrm{ABC}, \cot \frac{A}{2}=\frac{b+c}{a} \), then triangle \( \mathrm{ABC} \).... 2024-01-21 In a triangle \( A B C, \angle A=60^{\circ} \) and \( b: c=(\sqrt{3}+1): 2 \)
then \( (\angle B-.... 2024-01-21 An urn contain 3 red balls and \( n \) white balls. Mr. \( A \) draws two balls together from th.... 2024-01-21 Angles \( A, B \) and \( C \) of a triangle \( A B C \) are in A.P.
If \( \frac{b}{c}=\sqrt{\fra.... 2024-01-21 Match the items of column-I with those of column-II.
\begin{tabular}{|c|c|c|c|}
\hline \multicol.... 2024-01-21 The odds against an event \( A \) is \( 2: 3 \) and odds in favour of another event \( B \) is \.... 2024-01-21 Paragraph
Suppose \( E_{1}, E_{2} \) and \( E_{3} \) be three mutually exclusive
events such tha.... 2024-01-21 A natural number is selected at random from the first 100 natural numbers. Let \( A, B \) and \(.... 2024-01-21 Match the proposed probability under Column-I with the appropriate written description under Col.... 2024-01-21 Paragraph
Suppose \( E_{1}, E_{2} \) and \( E_{3} \) be three mutually exclusive
events such tha....