If \( \sin \alpha=\frac{15}{17} \) and \( \cos \beta=\frac{12}{13} ...

Channel:
PW Solutions
Subscribers:
449,000
Published on ● Video Link: https://www.youtube.com/watch?v=LXyOQAiRay0


Duration: 4:22
40 views
0

If \( \sin \alpha=\frac{15}{17} \) and \( \cos \beta=\frac{12}{13} \), find the values of :
\[
\cos (\alpha-\beta)
\]
\( \mathrm{W} \)
📲PW App Link - https://bit.ly/YTAI_PWAP
🌐PW Website - https://www.pw.live



Other Videos By PW Solutions


2023-02-14Two parallel wires each of length \( 10 \mathrm{~cm} \) are \( 0.5 \mathrm{~cm} \) apart. A film...
2023-02-14A capillary tube is attached horizontally to a constant pressure head arrangement. If the radius...
2023-02-14If \( \cos (\alpha+\beta)=\frac{4}{5}, \sin (\alpha-\beta)=\frac{5}...
2023-02-14A ball rises to the surface of a liquid with constant velocity. \( \mathrm{P} \) The density of ...
2023-02-14A solid sphere falls with a terminal velocity of \( 20 \mathrm{~m} \mathrm{~s}^{-1} \) in air. I...
2023-02-14The length of a needle floating on water is \( 2.5 \mathrm{~cm} \). The minimum force in additio...
2023-02-14If \( \sin \alpha=\frac{15}{17} \) and \( \cos \beta=\frac{12}{13} ...
2023-02-14A ring is cut from a platinum tube \( 8.5 \mathrm{~cm} \) internal and \( 8.7 \mathrm{~cm} \) ex...
2023-02-14A hollow sphere has a small hole in it. On lowering the sphere in a tank of water, it is observe...
2023-02-14Prove that : \( \sqrt{\frac{1-\cos \frac{5 \pi}{3}}{2}}=\frac{1}{2}...
2023-02-14If \( \sin \alpha=\frac{15}{17} \) and \( \cos \beta=\frac{12}{13} ...
2023-02-14If \( \sin \alpha=\frac{15}{17} \) and \( \cos \beta=\frac{12}{13} ...
2023-02-14Find \( a \) and \( b \) such that \( a \leq 3 \cos \theta+5 \sin \...
2023-02-14Prove that : \[ \cos ^{2}\left(\frac{\pi}{8}+\frac{x}{2}\right)-\si...
2023-02-14If \( \cos A=\frac{5}{13} \), and \( \sin B=\frac{4}{5} \), find \(...
2023-02-14The lower end of a capillary tube is at a depth of \( 12 \mathrm{~cm} \) and water rises \( 3 \m...
2023-02-14Prove that : \[ \cos \theta-\sin \theta=\sqrt{2} \cos \left(\theta+...
2023-02-14Prove that: (ii) \( 2 \tan 70^{\circ}=\tan 80^{\circ}-\tan 10^{\cir...
2023-02-14Water rises to a height \( h \) in a capillary tube of cross-sectional area \( A \). The height ...
2023-02-14Prove that: (i) \( \tan 50^{\circ}=\tan 40^{\circ}+2 \tan 10^{\circ...
2023-02-14If \( \cot \alpha \cot \beta=2 \), show that \( \frac{\cos (\alpha+...


Tags:
pw