Annoying Ass Spinor Spherical Harmonics Identity | Quantum Mechanics

In this video, I show how to do a tricky homework problem that I had a while ago.
My Quantum Mechanics Lecture Series:
• Quantum Mechanics Lect...
Typo: At 5:43, it should be Y(l , m+½) = (Sqrt { [ ( 2l + 1 ) ÷ 4π ] ⋅ ( l − m − ½ )! ÷ ( l + m + ½ )! } )⋅[exp i(m+½)φ]⋅P(l , m+½)