Question

This is b part of 1st que pls tell from where this 1/3 and all sort of term in bracket came

Answer 1

Suno i will tell you listen as we all know that in shm power of sin or cos is to simplest means it is 1 but as in this question power is not 1 but it is 3 so it is not shm but is periodic and jaha tak formule ki baat hai bracket mai jo aaya hai vo sin3Q=3sinQ-4sin^3Q hota hai so we shift and then we get that 4sin^3Q=(3sinQ-sin3Q)then 4 will get divided so the bracket wala we will get and usme 1 miss print hai 1/3ki jagah 1/4 aayega ty it was a nice question hope it helps you soumya