CBSE Class 10 Answered
urgent mam.you didn't answer this wen i 1st sent u.plz dont do like that.
Asked by merin m | 25 Mar, 2011, 12:53: AM
Expert Answer
Dear Student,
Here is the solution:
Let AM = x cm
In quadrilateral OBAC, OB = OC = 9 cm and AB = AC = 6 cm
Thus, OBAC is a kite. It is known that the diagonals of a kite are perpendicular to each other.
∴ OA ⊥ BC
In right angled ∆AMC,
AM2 + MC2 = AC2 [Pythagoras theorem]
MC2 = (62 – x 2) cm2
OM2 + MC2 = OC2
(9 – x)2 + (62 – x 2) = 92
MC2 = (62 – x 2) cm2
OM2 + MC2 = OC2
(9 – x)2 + (62 – x 2) = 92
81 + x 2 – 18x + 36 – x 2 = 81
18x = 36
⇒x = 2
18x = 36
⇒x = 2
Regards
Team Topperlearning
Answered by | 24 Mar, 2011, 08:32: PM
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