Show that 2 sin^2 β + 4 cos (α + β) sin α sin β + cos 2 (α + β) = cos 2α #iitjee #maths

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Show that 2 sin^2 β + 4 cos (α + β) sin α sin β + cos 2 (α + β) = cos 2α
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Sir aapke samjhane ke baad har question easy he lagta hai 🛐

laksh
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Best question sir👌👌👌👌 calculation to nice thi👍👍

AyushSingh-mshv
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Thank you sir
You made it easy #best explainer teacher need more videos 😋
🔥🔥🔥🔥

mayanksinghtomar
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After explanation calculation is easy and question also 🥰🥰

adityaa
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Hence proved 🔥
Thanks sir for explaining this question so wisely. You made it so easy🙏

rudraksh
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Sir Trigonometry bhi ab asaan lgne lgi hai, thank you 🙏

anushasyed
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Sir when will you upload other one shot videos of class 12

seemagoyal
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Sir proved .
Thanks for your support and efforts to make us successful in future .

viratkataria
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Completed Sir 👍 Calculation me maja aa gya😍

anirudhbiswas
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Nice Video SIR
Calculation Mein MaZa Aa Gya 🤩

achalkr
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Question became very easy after seeing Bk mathus sir explanation . Thank you sir for your efforts ❤️❤️

rekhajoshi
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Noicee sir ek baar main mst smjh aa gya 😍❤️

krishnasharma
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Proved sir, nice question for regular practice 👍🏻

yogitadahiya
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BK SIR LECTURES= CONCEPT CLEAR
Hence proved 👍

Tanmayupadhyay
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Calculation is very easy after explanation by you sir 😊😊

gaurankverma
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I was very much confused but you explained it so clearly 😊😊

Sadhna-nx
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Sir nice explained ❤ but your writing 😢😢😅

_Sigma_thoughts_