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Let | vec a|=1,| vec b|,| vec c|=3 and ...

Let `| vec a|=1,| vec b|,| vec c|=3 and vec a_|_( vec b+ vec c), vec b_|_( vec c+ vec a)a n d vec c_|_( vec a+ vec b)dot` then `|a+b+c|` is `sqrt(6)` (B) `6` (C) `sqrt(14)` (D) none of these

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JEE MAINS PREVIOUS YEAR ENGLISH-JEE MAINS-All Questions
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  2. |z-3i|=2|z-3| represents a straight line passing through (0+3) and (1+...

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  3. Let | vec a|=1,| vec b|,| vec c|=3 and vec a|( vec b+ vec c), vec b|(...

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  4. Let f:(4,6)vec(6,8) be a function defined by f(x)=x+[x/2]dotw h e r e[...

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  5. The total number of ways of selecting 4 letters from the word NARAYANA...

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  6. If f(x) be a continuous function such that f(x) does not vanish for al...

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  7. Two medians AD and BE of A B C are of length 4sqrt(2) & 6 and angle A...

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  8. Two persons A and B agree to meet at a place between 11 and 12. The fi...

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  9. The number of real roots xcosx=1 in [0,2pi] (A) 1 (B) 2 (C) 3 (D) non...

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  10. Given a > b >0,a1> b1>0, area of ellipse (x^2)/(a^2)+(y^2)/(b^2)=1 is ...

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  11. Given the following simultaneous equation for vectors vec xa n d vec ...

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  12. z1a n dz2 lie on a circle with center at the origin. The point of inte...

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  13. Q. Let z1 and z2 be nth roots of unity which subtend a right angle at...

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  14. The distance of point (-1, -5, -10) from the plane 10 x+2y-z=0 measure...

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

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

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

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

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

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