If x = cosec A + cos A and y = cosec A - cos A then prove that (2x+y)2

1.	If x = cosec A + cos A and y = cosec A - cos A then prove that (2x+y)2+(x−y2)2−1=0
Answer» If x = cosec A + cos A and y = cosec A - cos A then prove that $(\frac{2}{x + y})^{2} + (\frac{x - y}{2})^{2} - 1 = 0$

If x = cosec A + cos A and y = cosec A - cos A then prove that (2x+y)2+(x−y2)2−1=0

Answer»

If x = cosec A + cos A and y = cosec A - cos A then prove that

$(\frac{2}{x + y})^{2} + (\frac{x - y}{2})^{2} - 1 = 0$