|| R-S namimg ||

Exemplar Question discussion ||Incircle || Inradius || Ex-circle OF △ ABC,r=△/S,r1= △/(S-a),r2=△/(S-b),r3=△/(S-c) || Exercise-10.2 discussion || Chapter summary

Let R and S be two equivalence relations on a set A Then : " " A. R uu S is an equvalence relation on A " " B. R nn S is an equirvalence relation on A " " C. R - S is an equivalence relation on A " " D. None of these

Anu is a working partner and I3imla is a sleeping partner in a business. Anu puts in Rs. 5000 and Bimla puts in Rs. 6000. Anu receives 12.5% of the profit for managing the business and the rest is divided in proportion to their capitals. What does of a profit of Rs. 880? R s .400 , R s .480 b. R s .450 , R s .430 c. R s .460 , R s .420 d. R s .470 , R s .410

If R and S are relations on a set A, then prove the following: R and S are symmetric $R nn S and R uu S are symmetric R is reflexive and S is any relation hat varphi R uu S is reflexive.

If R and S are relations on a set A, then prove the following: R and S are symmetric rArr R nn S and R uu S are symmetric (ii) R is reflexive and S is any relation rArr R uu S is reflexive.

In Figure, P Q R S and A B R S are parallelograms and X is any point on side B Rdot Show that : a r(^(gm)P Q R S)=a r(^(gm)A B R S) a r(A X S)=1/2a r( P Q R S)

The r^(th),s^(th) and t^(th) terms of a certain G.P. are R,S and T respectively,prove that R^(s-t)*S^(t-r)*T^(r-s)=1

If s(r)=2+2r+2r^(2)+.....oo and "s(a)times s(-a)=420 , where a,r in(-1,1) . Then the value of (s(a)+s(-a))/(15) is equal to

If P Q R S is a square, then write the measure of /_S R P