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In A B C ,(a b-r1r2)/(r3),w h e r ea ,b ...

In `A B C ,(a b-r_1r_2)/(r_3),w h e r ea ,b ,r_1r_2, r_3, Ra n dr` have usual meanings, is equal to (A)`R` (B) `2R` (C) `r` (D) none of these

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JEE MAINS PREVIOUS YEAR ENGLISH-JEE MAINS-All Questions
  1. The distance of point (-1, -5, -10) from the plane 10 x+2y-z=0 measure...

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  2. The exhaustive set of values of a such that, x^2+a x+sin^(-1)(x^2-4x+5...

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  3. In A B C ,(a b-r1r2)/(r3),w h e r ea ,b ,r1r2, r3, Ra n dr have usual ...

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  4. Find the number of numbers of five digits that can be made with the ...

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  5. In a set of five games in between two players A and B, the probabil...

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  6. How many three –digit numbers are there which are divisible by 5 as we...

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  7. The area bounded by the curve y^2=4x and the double ordinate x=2, is 4...

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  8. int1^(e^(17))(pi"sin"(pi(log)e x))/x dx is equal to (A) 2 (B) -2 ...

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  9. From a group of 10 persons consisting of 5 lawyers, 3 doctors and 2 ...

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  10. A die is thrown a fixed number of times. If probability of getting eve...

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  11. If f(x) satisfies the condition of Rolle's theorem in [1,2], then int1...

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  12. The antiderivative of (2^x)/(sqrt(1-4^x)) w.r.t x is (A) (log)2edotsin...

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  13. The minimum value of, 25cosec^2x+16sin^2x is (A) 41 (B) 42 (C) 43 ...

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  14. if the graph of the cont. function y=f(x) passes through the point (a,...

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  15. The sum of the intercepts made by the plane a x+b y+c z=d on the three...

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  16. The value of sin^(-1)("cos"(cos^(-1)(cosx)+sin^(-1)(sinx))), where x i...

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  17. If sin^(-1)x-cos^(-1)x=pi/6 , then x= (a)1/2 (b) (sqrt(3))/2 (c) -1/2...

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  18. Area bounded by the curve y=sqrt(sin[x]+[sinx]),(w h e r e[dot] is gre...

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  19. Let f:[0,r]vec[-1,5],w h e r ef(x)={x^2-1,0lt=x<2 4,x=2,t h e nf(x)i s...

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  20. If a triangle is inscribed in a rectangular hyperbola, it’s orhtocente...

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