This short video provides a step-by-step tutorial on how to prove the trigonometric identity (1 + cosθ)(1 - cosθ)(1 + cot²θ) = 1. The video is perfect for 10th-grade students and uses the algebraic identity (a+b)(a-b) = a² - b² to simplify the expression. Hashtags: #Math #Trigonometry #Class10 #CBSE #ICSE #Trig #Algebra #Quiz #Shorts #YouTubeShorts #EducationalShorts #MathProblem #Proof YouTube Search Keywords: (1 + cosθ)(1 - cosθ)(1 + cot²θ) = 1 Class 10th trigonometry Proving trigonometric identities Math shorts NCERT math solution Trigonometry tutorial CBSE class 10 math