1
WB JEE 2023
+2
-0.5 The locus of points (x, y) in the plane satisfying $${\sin ^2}x + {\sin ^2}y = 1$$ consists of

A
a circle centered at origin
B
infinitely many circles that are all centered at the origin
C
infinitely many lines with slope $$\pm$$1
D
finitely many lines with slope $$\pm$$1
2
WB JEE 2022
+1
-0.25 A curve passes through the point (3, 2) for which the segment of the tangent line contained between the co-ordinate axes is bisected at the point of contact. The equation of the curve is

A
$$y = {x^2} - 7$$
B
$$x = {{{y^2}} \over 2} + 2$$
C
$$xy = 6$$
D
$${x^2} + {y^2} - 5x + 7y + 11 = 0$$
3
WB JEE 2022
+1
-0.25 If the equation of one tangent to the circle with centre at (2, $$-$$1) from the origin is 3x + y = 0, then the equation of the other tangent through the origin is

A
$$3x - y = 0$$
B
$$x + 3y = 0$$
C
$$x - 3y = 0$$
D
$$x + 2y = 0$$
4
WB JEE 2022
+1
-0.25 The side AB of $$\Delta$$ABC is fixed and is of length 2a unit. The vertex moves in the plane such that the vertical angle is always constant and is $$\alpha$$. Let x-axis be along AB and the origin be at A. Then the locus of the vertex is

A
$${x^2} + {y^2} + 2ax\sin \alpha + {a^2}\cos \alpha = 0$$
B
$${x^2} + {y^2} - 2ax - 2ay\cot \alpha = 0$$
C
$${x^2} + {y^2} - 2ax\cos \alpha - {a^2} = 0$$
D
$${x^2} + {y^2} - ax\sin \alpha - ay\cos \alpha = 0$$
WB JEE Subjects
Physics
Mechanics
Electricity
Optics
Modern Physics
Chemistry
Physical Chemistry
Inorganic Chemistry
Organic Chemistry
Mathematics
Algebra
Trigonometry
Coordinate Geometry
Calculus
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