If \(m\) and \(n\) respectively are the numbers of positive and negative value of \(\theta\) in .... VIDEO
If \(m\) and \(n\) respectively are the numbers of positive and negative value of \(\theta\) in the interval \([-\pi, \pi]\) that satisfy the equation \(\cos 2 \theta \cos \frac{\theta}{2}=\cos 3 \theta \cos \frac{9 \theta}{2}\), then \(m n\) is equal to 📲PW App Link - https://bit.ly/YTAI_PWAP 🌐PW Website - https://www.pw.live
Other Videos By PW Solutions 2024-07-29 Let \(S=\left\{\theta \in(0,2 \pi): 7 \cos ^2 \theta-3 \sin ^2 \theta-2 \cos ^2 2 \theta=2\right.... 2024-07-29 Let \(\vec{a}=2 \hat{i}+\hat{j}-\hat{k}\) and \(\vec{b}=\hat{i}+2 \hat{j}+\hat{k}\) be two vecto.... 2024-07-29 Let \(a, b\), and \(c\) be distinct positive numbers. If the vectors \(a \hat{i}+a \hat{j}+c \ha.... 2024-07-29 Let \(\hat{\imath}, \hat{\jmath}\) and \(\hat{k}\) be the unit vectors along the three positive .... 2024-07-29 If \(\vec{a}=2 \hat{i}+\hat{j}+3 \hat{k}, \vec{b}=3 \hat{i}+3 \hat{j}+\hat{k}\) and \(\vec{c}=c_.... 2024-07-29 Let the position vectors of the points \(P, Q, R\) and \(S\) be \(\vec{a}=\hat{i}+2 \hat{j}-5 \h.... 2024-07-29 Let \(f(\theta)=3\left(\sin ^4\left(\frac{3 \pi}{2}-\theta\right)+\sin ^4(3 \pi+\theta)\right)-2.... 2024-07-29 For non-negative integers \(n\), let\[f(n)=\frac{\sum_{k=0}^n \sin \left(\frac{k+1}{n+2} \pi\rig.... 2024-07-29 Let \(S=\left\{x \in\left(-\frac{\pi}{2}, \frac{\pi}{2}\right): 9^{1-\tan ^2 x}+9^{\tan ^2 x}=10.... 2024-07-29 Let \(P_1\) be the plane \(3 x-y-7 z=11\) and \(P_2\) be the plane passing through the points \(.... 2024-07-29 If \(m\) and \(n\) respectively are the numbers of positive and negative value of \(\theta\) in .... 2024-07-29 In a triangle \(A B C\), let \(A B=\sqrt{23}, B C=3\) and \(C A=4\). Then the value of \( \frac{.... 2024-07-29 Let \(f: R \rightarrow R\) be defined as \(f(x+y)+f(x-y)\) \(=2 f(x) f(y), f\left(\frac{1}{2}\ri.... 2024-07-29 The number of solutions of \(\sin ^7 x+\cos ^7 x=1, x \in[0,4 \pi]\) is equal to :.... 2024-07-29 For a triangle ABC, the value of cos2A+cos2B+cos2C is least. If its inradius is 3 and incen.... 2024-07-29 The value of cos210°-cos10° cos50°+ cos250° is.... 2024-07-29 \(\operatorname{cosec} 18^{\circ}\) is a root of the equation:.... 2024-07-29 If the mirror image of the point \((1,3,5)\) with respect to the plane \(4 x-5 y+2 z=8\) is \((\.... 2024-07-29 Consider the line \(L\) given by the equation\(\frac{x-3}{2}=\frac{y-1}{1}=\frac{z-2}{1}\). Let .... 2024-07-29 Let \(\frac{\sin A}{\sin B}=\frac{\sin (A-C)}{\sin (C-B)}\), where \(A, B, C\) are angles of a t.... 2024-07-29 Let \(ABC\) be the triangle with \(A B=1, A C=3\) and \(\angle B A C=\frac{\pi}{2}\). If a circl....
0