If \( \sin \alpha=\frac{4}{5} \), then find the value of \( \sin 2 \alpha \). \( \therefore \)
If \( \sin \alpha=\frac{4}{5} \), then find the value of \( \sin 2 \alpha \).
\( \therefore \)
📲PW App Link - https://bit.ly/YTAI_PWAP
🌐PW Website - https://www.pw.live
Other Videos By PW Solutions
| 2022-12-02 | If \( P: Q=\tan 2 A: \cos A \) and \( Q: R=\cos 2 A: \) \( \sin 2 A \), then \( P: R \) is
(a) \... |
| 2022-12-02 | If \( \sin A=\frac{\sqrt{3}}{2} \) and \( A \) is an acute angle, then find
(W) the value of \( ... |
| 2022-12-02 | If \( \sin \theta \) and \( \cos \theta \) are the roots of the quadratic equation \( l x^{2}-m ... |
| 2022-12-02 | If \( \cos ^{2} \alpha+\cos \alpha=1 \), then find the value of 4 \( \sin ^{2} \alpha+4 \sin ^{4... |
| 2022-12-02 | If \( \sin (A+B)=\frac{\sqrt{3}}{2} \) and \( \cot (A-B)=1 \), then find \( A \) and \( B \). |
| 2022-12-02 | If \( \cos \alpha=\frac{12}{13} \) and \( \sin \beta=\frac{4}{5} \), then find \( \sin (\alpha+\... |
| 2022-12-02 | If \( a+b+c=0 \), show that \( a^{3}+b^{3}+c^{3}=3 a b c \) The following are the steps involved... |
| 2022-12-02 | If \( A+B=45^{\circ} \), then find the value of \( \tan A+\tan B \) \( +\tan A \tan B \). (V) |
| 2022-12-02 | If \( \tan 2 \alpha=\frac{3}{4} \), then find \( \tan \alpha \). (VI) |
| 2022-12-02 | The length of the minutes hand of a wall clock is \( 36 \mathrm{~cm} \). Find the distance cover... |
| 2022-12-02 | If \( \sin \alpha=\frac{4}{5} \), then find the value of \( \sin 2 \alpha \). \( \therefore \) |
| 2022-12-02 | Brain ventricles are lined by: (A) Ependymal cells (B) Schwann cells (C) Neuroglia (D) Neurons |
| 2022-12-02 | If \( \sec ^{2} \alpha+\cos ^{2} \alpha=2 \), then find the value of \( \sec \alpha \)
(VI)
\[
+... |
| 2022-12-02 | Eliminate \( \theta \) from the equations, \( a=x \sin \theta-\gamma \) \( \cos \theta \) and \(... |
| 2022-12-02 | Find the value of \( \tan 75^{\circ} \). E E: (IV |
| 2022-12-02 | यदि बैरोमीटर में पारे की जगह पानी का प्रयोग किया जाए, तो \( 76 \mathrm{~cm} \) पारे की वायुमंडली... |
| 2022-12-02 | In the adjoining figure, find the value of \( \sin C \). \( \mathrm{W} \) |
| 2022-12-02 | A wheel makes 200 revolutions in 2 minutes.
(W) Find the measure of the angle it describes at th... |
| 2022-12-02 | Find the length of the chord subtending an angle of \( 120^{\circ} \) at the centre of the circl... |
| 2022-12-02 | Convert \( \left(\frac{200}{3}\right)^{g} \) into other two systems. W \( \because \) |
| 2022-12-02 | In \( \triangle A B C \), the lengths of the three sides \( A B, B C \) and \( C A \) are \( 28 ... |
0