If `x=asecthetacosphi` ,`y=secthetasinphiandz=ctantheta`,show that`(x^(2))/(a^(2))+(y^(2))/(b^(2))-(z^(2))/(c^(2))=1`.

If x=asecthetacosvarphi,\ \ y=bsecthetasinvarphi and z=ctantheta , show that (x^2)/(a^2)+(y^2)/(b^2)-(z^2)/(c^2)=1

If x=asecthetacosvarphi , y=bsecthetasinvarphi and z=ctantheta , then (x^2)/(a^2)+(y^2)/(b^2)= (a) (z^2)/(c^2) (b) 1-(z^2)/(c^2) (c) (z^2)/(c^2)-1 (d) 1+(z^2)/(c^2)

If x = a sec A cos B, y = b sec A sin B and z = c tan A, show that : (x^(2))/ (a^(2)) + (y^(2))/ (b^(2)) - (z^(2))/(c^(2)) = 1

Show that: ((a^(x+1))/(a^(y+1)))^(x+y)\ ((a^(y+2))/(a^(z+2)))^(y+z)\ ((a^(z+3))/(a^(x+3)))^(z+x)=1

Let a ,b , c be the real numbers. The following system of equations in x ,y ,a n dz (x^2)/(a^2)+(y^2)/(b^2)-(z^2)/(a^2)=1,(x^2)/(a^2)-(y^2)/(b^2)+(z^2)/(a^2)=1,-(x^2)/(a^2)+(y^2)/(b^2)+(z^2)/(a^2)=1 has a. no solution b. unique solution c. infinitely many solutions d. finitely many solutions

Let a ,b , c be real numbers. The following system of equations in x ,y and z (x^2)/(a^2)+(y^2)/(b^2)-(z^2)/(a^2)=1,(x^2)/(a^2)-(y^2)/(b^2)+(z^2)/(a^2)=1,-(x^2)/(a^2)+(y^2)/(b^2)+(z^2)/(a^2)=1 has a. no solution b. unique solution c. infinitely many solutions d. finitely many solutions

If x+y+z=xyz , prove by trignometry that: (2x)/(1-x^(2))+(2y)/(1-y^(2))+(2z)/(1-z^(2))=(2x)/(1-x^(2)).(2y)/(1-y^(2)).(2z)/(1-z^(2))

If a^x=b^y=c^z and b^2=a c , then show that y=(2z x)/(z+x)

If x/a=y/b=z/c, then show that (x^3+a^3)/(x^2+a^2)+(y^3+b^3)/(y^2+b^2)+(z^3+c^3)/(z^2+c^2)=((x+y+z)^3+(a+b+c)^2)/((x+y+z)^2+(a+b+c)^2).

If z= x + yi and |2z + 1| = |z- 2i| , show that 3(x^(2) + y^(2)) + 4(x-y)=3