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Are bhai this is the easiest ques that i cud ask. if u know then pleeese tell

Hey how can i get ques on some particular topic? Suppose i want some ques on ellipse, then where shud i go?

in any triangle prove that

acos{(B-C)/2}=(b+c)sinA/2

I calculate i in this way: calculate number of sigma bonds that atom is making.Add this number to the number of lone pair of electrons on that atom that are not participating in resonance.The ans gives u the hybridisation.

Isoelectronic are the species having same number of electrons. Eg. K+,Ca2+,Ar,Cl-,S2- etc. No they don't share any other property, just the fact that they have same no. of electrons.

that's an old joke, PJ hain

If in a triangle, angleC = 60 degraees, then prove that

1/(a+c) + 1/(b+c) = 3/(a+b+c)

We have 12 balls.11 are equal in weight.12th weighs more than others.you have a weighing balance.you can balance weights only thrice.How will you determine which is the heavier ball?

good thoughts man