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CBSE Class 10 Answered

iN THE FIG, THE COMMON TANGENT, AB AND CD TO TWO CIRCLES WITH CENRES O, AND O' INTERSECT AT E. PROVE THAT THE POINTS O, E, O' ARE COLLINEAR
Asked by Divyaa | 25 Mar, 2017, 02:52: PM
answered-by-expert Expert Answer
begin mathsize 16px style Construction colon space Join space OA space and space OC. In space increment OAE space and space increment OCE comma space we space have OA equals OC space left parenthesis radii space of space the space same space circle right parenthesis OE equals OE space left parenthesis common space side right parenthesis angle OAE equals angle OCE space left parenthesis each space is space 90 degree right parenthesis rightwards double arrow increment OAE approximately equal to increment OCE space left parenthesis RHS space congruence space criterion right parenthesis rightwards double arrow angle AEO equals angle CEO space left parenthesis cpct right parenthesis Similarly comma space angle BEO apostrophe equals angle DEO apostrophe angle AEC equals angle DEB rightwards double arrow 1 half angle AEC equals 1 half angle DEB rightwards double arrow angle AEO equals angle CEO equals angle BEO apostrophe equals angle DEO apostrophe Since space these space angles space are space equal space and space are space bisected space by space OE space and space straight O apostrophe straight E comma space straight O comma space straight E space and space straight O apostrophe space are space collinear. end style
Answered by Rebecca Fernandes | 25 Mar, 2017, 05:39: PM

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CBSE 10 - Maths
in the given figure a triangle abc is drawn to circumscribe a circle of radius 3 cm such that the segment bd and dc are respectively of length 6 and 9 cm if the area of traingle abc is 54cm2 then find side ab and ac
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Asked by anushkasingh260805 | 20 Dec, 2020, 07:22: PM
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Asked by anjalirajp004 | 22 Sep, 2020, 08:17: AM
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CBSE 10 - Maths
The length of a tangent from a point A at distance 5 cm from the centre of the circle is 4 cm. The radius of the circle is
Asked by rashikediadelhi | 21 Sep, 2020, 09:02: AM
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CBSE 10 - Maths
From any point on the common chord of two intersecting circles, tangents be drawn to thecircles, prove that they are equal. 
Asked by prasutally | 26 May, 2019, 08:23: AM
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CBSE 10 - Maths
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Asked by prasutally | 26 May, 2019, 08:22: AM
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CBSE 10 - Maths
A tangent PA is drawn fron an external point P to a circle of radius 3 square root of 2cm such that the distance of the point P from O is 6cm.Find yhe value ofangle A p o. 
Asked by kamatshantanu | 08 May, 2019, 11:39: AM
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