Question

If \displaystyle x+y+z=\pix+y+z=π prove the trigonometric identity
\displaystyle cot{\frac{x}{2}}+cot{\frac{y}{2}}+cotg\frac{z}{2}=cot{\frac{x}{2}}cot{\frac{y}{2}}cot{\frac{z}{2}}cot
2
x
​
+cot
2
y
​
+cotg
2
z
​
=cot
2
x
​
cot
2
y
​
cot
2
z
​
​

Answer 1

Answer:

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