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Question

What is the ratio of the angles in ΔABC?

A
1:1:2
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B
1:1:3
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C
1:1:3
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D
1:1:2
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Solution

The correct option is D 1:1:2

From the given figure, we have
B=90 and C=45

A+B+C=180
[Angle Sum Property]
A+B+45=180
A+90 +45=180 A=180 135 A=45

A:B:C=45:45:90 =45:45:(45×2)

Dividing throughout by 45, we get
1 : 1 : 2.

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