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CBSE Class 11-science Answered

 
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Asked by araima2001 | 24 Sep, 2016, 12:26: PM
answered-by-expert Expert Answer
Quadrilateral space ABCD space is space inscribed space in space straight a space circle space means space its space straight a space cyclic space quadrilateral. rightwards double arrow angle straight A space plus space angle straight C space equals space 180 degree space space space space and space space space angle straight B space plus space angle straight D space equals space 180 degree space Now space comma tan space left parenthesis straight B plus straight D right parenthesis equals fraction numerator tanB plus tanD over denominator 1 minus tanBtanD end fraction tan left parenthesis 180 degree space right parenthesis space equals fraction numerator tanB plus tanD over denominator 1 minus tanBtanD end fraction 0 equals fraction numerator tanB plus tanD over denominator 1 minus tanBtanD end fraction tanB plus tanD equals 0 therefore Option space space left parenthesis straight D right parenthesis space space space is space correct.
Answered by Vijaykumar Wani | 26 Sep, 2016, 10:20: AM

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CBSE 11-science - Maths
2 one
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Asked by dra | 24 Feb, 2024, 06:35: AM
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CBSE 11-science - Maths
find the coordinates of the centre of a circle passing through the points(0,0),(-2,1)and(-3,2).also , find its radius .
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Asked by shakyajayprakash2006 | 08 Jun, 2022, 05:26: PM
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CBSE 11-science - Maths
Examine whether the point (4, 5) lies outside or inside the circle of equation x^2+y^2-2x-3=0
Asked by sbipo2000 | 23 Feb, 2020, 03:43: PM
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CBSE 11-science - Maths
SIR PLEASE HELP ME WITH THIS QUESTIONS : 1. Find the equation of the tangent to the circle x^2+y^2=16 drawn from the point (1,4). 2. How many triangles can be formed by joining any 3 of the 9 points when i) no 3 of them  are collinear? ii) 5 of them are collinear? 3. AB is a line of fixed length, 6 units, joining the points A(t,0) and B which lies on thepositive y axis. P is a point on AB distant 2 units from A. Express the coordinates of B and P in terms of t. Find the locus of P as t varies. 4. In a triangle ABC, (b^2 - c^2) / (b^2 + c^2) = sin(B - C) / sin(B + C), prove that it is either a right-angled or isoceles triangle.
Asked by kandappan | 08 Feb, 2020, 11:29: AM
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CBSE 11-science - Maths
6
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Asked by gauravmore604 | 04 Nov, 2019, 03:31: PM
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CBSE 11-science - Maths
The locus of point for which sum of the squares of distances from cordinate axes is 25 is
Asked by Tejravi969 | 19 Aug, 2019, 06:08: AM
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CBSE 11-science - Maths
A stadium is in circular shape. Within the stadium some areas have been allotted for a hockey court and a javelin range, as given in the figure. Assume the shape of the hockey court and the javelin range to be square and triangle, resp. The curators would like to accommodate a few more sports in the stadium. Help them by measuring the unallocated region within the stadium.(the radius of the stadium is 200 mts.)  
Asked by rushabh1234 | 23 Jan, 2019, 08:59: PM
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CBSE 11-science - Maths
Find the equation of the circle with centre (-2,3) and radius 4.
Asked by Topperlearning User | 30 Apr, 2014, 11:08: AM
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CBSE 11-science - Maths
Find the centre and radius of the circle given by the equation (x + 5)2 + (y + 1 )2 = 9
Asked by Topperlearning User | 25 Apr, 2014, 09:39: AM
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CBSE 11-science - Maths
Find the co-ordinates of the centre and the radius of the circle given by the equation x2 + y2 + 6x - 8y - 24 = 0.
Asked by Topperlearning User | 25 Apr, 2014, 09:11: AM
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