In a \( \triangle A B C, \tan \left(\frac{A+C}{2}\right)= \) (a) \( \tan \frac{B}{2} \) (b) \( \...

Channel:
PW Solutions
Subscribers:
482,000
Published on ● Video Link: https://www.youtube.com/watch?v=Dfgt5roSN1o


Duration: 3:27
3 views
0

In a \( \triangle A B C, \tan \left(\frac{A+C}{2}\right)= \)
(a) \( \tan \frac{B}{2} \)
(b) \( \cot \frac{B}{2} \)
(c) \( -\tan B \)
(d) \( \cot B \)
๐Ÿ“ฒPW App Link - https://bit.ly/YTAI_PWAP
๐ŸŒPW Website - https://www.pw.live



Other Videos By PW Solutions


2022-10-26The value of \( \frac{\cos ^{4} x+\cos ^{2} x \sin ^{2} x+\sin ^{2} x}{\cos ^{2} x+\sin ^{2} x \...
2022-10-26\[ \frac{\sin ^{4} \theta-\cos ^{4} \theta}{\sin ^{2} \theta-\cos ^{2} \theta}= \] (a) \( -1 \) ...
2022-10-26\( \sin ^{2} 20+\sin ^{2} 70 \) is equal to (a) 1 (b) \( -1 \) (c) 0
2022-10-26\( (\operatorname{cosec} A-\sin A)(\sec A-\cos A)(\tan A+\cot A)= \) (a) \( -1 \) (b) 2 (c) 0
2022-10-26If \( \tan \left(A-30^{\circ}\right)=2-\sqrt{3} \), then find \( A \) (a) \( \frac{\pi^{c}}{2} \...
2022-10-26If \( \sin ^{4} A-\cos ^{4} A=1 \), then \( (A / 2) \) is \( A \leq 90^{\circ} \) ). (a) \( 45^{...
2022-10-26\[ \frac{\tan ^{3} \theta-1}{\tan \theta-1}= \] (a) \( \sec ^{2} \theta+\tan \theta \) (b) \( \s...
2022-10-26For all values of \( \theta, 1+\cos \theta \) can be (a) positive (b) negative (c) non-positive
2022-10-26If \( \sec \alpha+\tan \alpha=m \), then \( \sec ^{4} \alpha-\tan ^{4} \alpha-2 \) \( \sec \alph...
2022-10-26If \( \sin ^{4} \theta-\cos ^{4} \theta=K^{4} \), then \( \sin ^{2} \theta-\cos ^{2} \theta \) i...
2022-10-26In a \( \triangle A B C, \tan \left(\frac{A+C}{2}\right)= \) (a) \( \tan \frac{B}{2} \) (b) \( \...
2022-10-26The value of \( \tan 15^{\circ} \tan 20^{\circ} \tan 70^{\circ} \tan 75^{\circ} \) is (a) \( -1 ...
2022-10-26If \( a=\sec \theta-\tan \theta \) and \( b=\sec \theta+\tan \theta \), then (a) \( a=b \). (b) ...
2022-10-26Simplified expression of \( (\sec \theta+\tan \theta)(1-\sin \theta) \) is (a) \( \sin ^{2} \the...
2022-10-26A wheel makes 20 revolutions per hour. The radians it turns through 25 minutes is (a) \( \frac{5...
2022-10-26Prove that \( \sin ^{8} \theta-\cos ^{8} \theta=\cos 2 \theta\left(2 \sin ^{2} \theta \cos ^{2} ...
2022-10-26If \( \sin A=\frac{3}{5} \) and \( A \) is not in the first quadrant, then find \( \frac{\cos A+...
2022-10-26\( \sin \theta \cos \left(90^{\circ}-\theta\right)+\cos \theta \sin \left(90^{\circ}-\theta\righ...
2022-10-26The 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...
2022-10-26Show that \( 6(\sin x+\cos x)^{4}+12(\sin x-\cos x)^{2}+ \) \( 8\left(\sin ^{6} x+\cos ^{6} x\ri...


Tags:
pw