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vazorg
[7]
3 years ago
14
AB and AD are tangents of the circle with the center at C. The measure of BDC = 45o, and the circle has a diameter of 4. Which i
s the length of AB?
help needed!!
Mathematics
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1
answer:
34kurt
3 years ago
4
0
Hello,
ABCD is a diamond.
Let's D' the intersection of the circle and DC.
m∠BCD'=2*m∠BDC=2*45=90°
m∠BCD=90°
The diagonals of ABCD are perpendicular==>ABCD is a diamond and AB=BC=CD=DA=2
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