Angle between the lines represented by the equation `x^2+2xysec theta +y^2=0` is
(A) `theta`
(B) `2theta`
(C) `theta/2`
(D) None of these

Angle between the lines represented by the equation x^(2)+2xy sec theta+y^(2)=0 is (A) theta (B) 2 theta (C) (theta)/(2) (D) None of these

The angle between the lines represented by the equation (x^(2)+y^(2))sin theta+2xy=0 is

The angle between the lines represented by the equation (x^(2)+y^(2))sin theta+2xy=0 is

Find the angle between the lines represented by x^(2)+2xy sec theta+y^(2)=0

Difference of slopes of the lines represented by the equation x^2(sec^2 theta - sin ^2 theta) -2xytan theta + y^2 sin^2 theta=0 is (A) 4 (B) 3 (C) 2 (D) None of these

Difference of slopes of the lines represented by the equation x^(2)(sec^(2)theta-sin^(2)theta)-2xy tan theta+y^(2)sin^(2)theta=0 is (A) 4 (B) 3 (C) 2 (D) None of these

c(1+cos2theta)= (A) c 2sin^2theta (B) c2cos^2theta (C) c2tan^2theta (D) none of these

The acute angle theta between the lines represented by 2x^(2)+7xy+3y^(2)=0 is

The acute angle theta between the lines represented by 3x^(2)+2xy-y^(2)=0 is