The angle of intersection of the curves `x y=a^2` and `x^2-y^2=2a^2` is zero `0o` (b) `45o` (c) `90o` (d) `30o`

The angle of intersection of the curves x y=a^2 and x^2-y^2=2a^2 is (a) 0^o (b) 45^o (c) 90^o (d) 30^o

The angle between the curves y^2=x and x^2=y at (1,\ 1) is tan^(-1)4/3 (b) tan^(-1)3/4 (c) 90o (d) 45o

PQ is a tangent drawn from a point P to a circle with centre O and QOR is a diameter of the circle such that /_POR=120o, then /_OPQ is 60o (b) 45o (c) 30o (d) 90o

In an isosceles triangle A B C if A C=B C and A B^2=2A C^2 , then /_C= 30o (b) 45o (c) 90o (d) 60o

The ratio of the length of a rod and its shadow is 1:sqrt(3) .The angle of elevation of the sum is 30o (b) 45o (c) 60o (d) 90o .

Let C be a curve which is the locus of the point of intersection of lines x=2+m and m y=4-mdot A circle s-=(x-2)^2+(y+1)^2=25 intersects the curve C at four points: P ,Q ,R ,a n dS . If O is center of the curve C , then O P^2+O Q^2+O R^2+O S^2 is (a) 25 (b) 50 (c) 100 (d) 200

P Q is a tangent drawn from a point P to a circle with centre O and Q O R is a diameter of the circle such that /_P O R=120o , then /_O P Q is 60o (b) 45o (c) 30o (d) 90o

Find the area bounded between the curves y^(2)=4ax o* x^(2)=4by(a>0,b>0)

sin2A=2sin A is true when A=0o(b)300 (c) 45o(d)60o

In an isosceles triangle ABC if AC=BC and AB^(2)=2AC^(2), then /_C=30o(b)450 (c) 90o(d)60o