11. s Cos²re da

The locus of point z satisfying Re((1)/(z))=k, where k is a nonzero real number,is a.a a straight line b.a circle c.an ellipse d.a hyperbola

Fill in the blanks with correct answer(s) / Correct the underlined portion of the sentences The 'Father of Modern Palaeontology is underset"______________________""Leonardo da Vinci" .

What weight of CO is required to form Re_(2)(CO)_(10) from 2.50 g fo f Re_(2)O_(7) according to the unbalanced reaction: Re_(2)O_(7) + CO rarr Re_(2)(CO)_(10)+CO_(2) (Re =186 ,C =12 and O=16).Give your answer to the nearest integar.

If z=(1)/(1-cos theta- isintheta) then Re(z)=....

If z = (1)/(1 - cos theta - i sin theta), the Re (z)=

What will be the change in potential energy of a body of mass m when it is raised from height R_E above the Earth’s surface to 5/2 R_E above the Earth’s surface? R_E and M_E are the radius and mass of the Earth respectively

If in a triangle ABC, the side c and the angle C remain constant,while the remaining elements are changed slightly,show that (da)/(cos A)+(db)/(cos B)=0

In Delta ABC , the side c and angle C are constant. If there are small changes in the remaining sides and angles, then show that (da)/(cos A) +(db)/(cos B)= 0 .

In Fig.2, a quadrilateral ABCD is drawn to circumscribe a circle, with centre O, in such a way that the sides AB, BC, CD and DA touch the circle at the points P, Q, R and S respectively. Prove that AB + CD = BC + DA.