A) \[145{}^\circ \]
B) \[135{}^\circ \]
C) \[45{}^\circ \]
D) \[150{}^\circ \]
Correct Answer: B
Solution :
\[\angle 1+\angle 2\,90{}^\circ \] (Complementary angles) \[\angle 2=\,90{}^\circ -\angle 1\Rightarrow 90{}^\circ -45{}^\circ \Rightarrow \angle 2=45{}^\circ \] \[\angle 2+\angle 3=180{}^\circ \] (Supplementary angles) \[\angle 3=180{}^\circ -\angle 2\] \[\angle 3=180{}^\circ -45{}^\circ =135{}^\circ \]You need to login to perform this action.
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