Prove that \[ \sin \left(45^{\circ}+A\right) \cos \left(45^{\circ}-B\right)+\cos \left(45^{\circ...

Channel:
PW Solutions
Subscribers:
449,000
Published on ● Video Link: https://www.youtube.com/watch?v=uYXZ7xMPBq0


Duration: 2:11
11 views
0

Prove that
\[
\sin \left(45^{\circ}+A\right) \cos \left(45^{\circ}-B\right)+\cos \left(45^{\circ}+A\right) \sin \left(45^{\circ}-B\right)=\cos (A-B)
\]
📲PW App Link - https://bit.ly/YTAI_PWAP
🌐PW Website - https://www.pw.live



Other Videos By PW Solutions


2022-11-17Nissl's bodies are mainly composed of (A) proteins and lipids (B) DNA and RNA (C) nucleic acids ...
2022-11-17If \( (n+2) !=60[(n-1) !] \), find \( n \)
2022-11-17Maximum number of eggs released by single female Ascaris in any day is : (A) 2000 (B) 20000 (C) ...
2022-11-17Write a note on cellulose.
2022-11-17There is a certain net flux \( \Phi_{i} \) through a Gaussian sphere of radius \( r \) enclosing...
2022-11-17The three coordinates planes divide the space into parts.
2022-11-17Prove that \[ \cos \alpha \cos (\gamma-\alpha)-\sin \alpha \sin (\gamma-\alpha)=\cos \gamma \]
2022-11-17Which has higher wavelength, an electron or a proton moving with same speed? Why?
2022-11-17What are multiple alleles? Is there dominance in multiple alleles?
2022-11-17Calculate the total no. of electrons in: one molecule of \( \mathrm{CO}_{2} \)
2022-11-17Prove that \[ \sin \left(45^{\circ}+A\right) \cos \left(45^{\circ}-B\right)+\cos \left(45^{\circ...
2022-11-17Two charged spherical conductors of radii \( R_{1} \) and \( R_{2} \) when connected by a conduc...
2022-11-17\( 310 \mathrm{~K} \) पर जल का आयनिक गुणनफल \( 2.7 \times 10^{-14} \) है। इसी तापक्रम पर उदासीन ...
2022-11-17The joint equation of the straight lines \( x+y=1 \) and \( x-y=4 \), is (A) \( x^{2}-y^{2}=-4 \...
2022-11-17अभिक्रिया, \( 2 \mathrm{~N}_{2} \mathrm{O}_{5} \longrightarrow 4 \mathrm{NO}_{2}+\mathrm{O}_{2} ...
2022-11-17Evolutionary sequence of canal system in sponges is (A) Sycon \( \rightarrow \) Ascon \( \righta...
2022-11-17संकर आयन \( \left[\mathrm{Ni}(\mathrm{CN})_{4}\right]^{x} \) में \( x \) का मान है : (A) \( +2 \...
2022-11-17Housefly lays eggs in : (A) water (B) stagnant water (C) decomposing organic matters (D) comb
2022-11-17In Young's double slit experiment the amplitudes of two sources are \( 3 a \) and \( a \) respec...
2022-11-17ग्लूकोज अणु में असममित कार्बन परमाणुओं की संख्या है : (A) 1 (B) 2 (C) 4 (D) 6
2022-11-17Determine the sum of first 35 terms of an A.P. if \( a_{2}=2, a_{7}=22 \).