\[\Delta ABC\]is right angled at B. Which statement is true?

1.	\[\Delta ABC\]is right angled at B. Which statement is true?
A.	\[x+y={{180}^{o}}\]
B.	\[~x+y=270{}^\circ \]
C.	\[~x+y=300{}^\circ \]
D.	\[~x+y=90{}^\circ \]
Answer» C. \[~x+y=300{}^\circ \]

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\[\Delta ABC\]is right angled at B. Which statement is true?

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