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Answer: Option D
:
D
Here ∠ABD and ∠ABC are supplementary, since they lie on a straight line.
Hence∠DBC = 180∘
Given,∠ABC = 90∘
∴∠ ABD = 180 - ∠ ABC = 180 - 90 = 90∘
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:
D
Here ∠ABD and ∠ABC are supplementary, since they lie on a straight line.
Hence∠DBC = 180∘
Given,∠ABC = 90∘
∴∠ ABD = 180 - ∠ ABC = 180 - 90 = 90∘
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