Good Evening FriendsPlease solve the question !!!CLASS -XMATHSCH - TRI

1.	Good Evening FriendsPlease solve the question !!!CLASS -XMATHSCH - TRIGONOMETRY❎ No Spamming ❎
Answer» Here, I am WRITING θ as A for BETTER UNDERSTANDING!. $=>Given:\frac{1-cosA}{1+cosA}$ $=>\frac{1-cosA}{1+cosA}\frac{1-cosA}{1-cosA}$ $=>\frac{(1-cosA)^2}{1^2-cos^2A}$ $=>\frac{1+cos^2A-2cosA}{1-cos^2A}$ $=>\frac{1+cos^2A-2cosA}{sin^2A}$ $=>\frac{1}{sin^2A}+\frac{cos^2A}{sin^2A}-\frac{2cosA}{sin^2A}$ $=>cosec^2A+cot^2A-\frac{2}{sinA} \frac{cosA}{sinA}$ $=>cosec^2A+cot^2A-2cosecAcotA$ $=>\boxed{(cosecA-cotA)^2}$ HOPE it HELPS!