Question & Answer: Page 1

Naveen kumar asks : 3 chords of a circle are parallel to each other, lengths of 4, 6, 8 respectively. The angles subtended by the chords are a, b, a+b respectively. Find cos a. Express in the form p/q whereGCD(P,Q)=1

Tag : subtended,expre,angles,circle,chords,parallel,lengths

Category : Engineering Entrance | On : 2011-01-14 08:58:55

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Vinay kumar says :

19/01/2011 01:26:23

sina=4/2r , and sinb=6/2r, and s(a+b)=8/2r , solving above three eqs ,we get radius.

;cosa=7/8

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Tirumalasetty chennakesavarao asks : a vector makes angles in the ratio 1:2:3 with the coordinate axes respectively.find the angle made by the lvector with y-axis

Tag : makes,axes,angles,vector,lvector,mathematics,coordinate,angle,yaxis,ratio,made

Category : Mathematics | On : 2010-07-17 08:24:05

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Adarsh balaji says :

17/07/2010 11:59:35

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Disha sardana asks : The cosine of acute angle between the medians drawn from the acute angles of an isosceles right angled triangle is ? (i) 2/3 (ii)3/4 (iii)4/5 (iv)none

Tag : angled,triangle,drawn,mathematics,cosine,ivnone,angles,isosceles,angle,medians

Category : Mathematics | On : 2010-04-16 01:34:01

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Nishu ayushi says :

26/10/2010 08:41:27

(iii)4/5

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Sunil tripathy asks : In a triangle ABC, the angle A is greater than the angle B. If the values of the angles A and B satisfy the equation, 3sin x – 4 sin3 x – k = 0, 0 < k < 1, then the value of C is

Tag : triangle,satisfy,values,equation,greater,angle,angles

Category : MCA Entrance | On : 2009-03-17 01:31:52

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