If x=a sec theta + b tan theta and y = a tan theta + b sec theta, prove that x^2-y^2=a^2-b^2

If x=a sec theta + b tan theta and y = a tan theta + b sec theta, prov

1.	If x=a sec theta + b tan theta and y = a tan theta + b sec theta, prove that x^2-y^2=a^2-b^2
Answer» At first u squaring both sides of both equation then subtract it u will get your answer