MCQ
Find the measure of the complementary angle of $90^\circ .$
- ✓$0^\circ$
- B$45^\circ$
- C$90^\circ$
- D$60^\circ$
The pair of angles is said to be complementary, when their sum is $90^\circ .$
Let $x, y$ be any two complementary angles and $\text{m}(\angle{\text{x}})=90^\circ$
$\Rightarrow\text{m}(\angle{\text{x}})+\text{m}(\angle{\text{y}})=90^\circ.....$ (By definition of complementary angles)
$\Rightarrow90^\circ+\text{m}(\angle\text{y})=90^\circ$
$\Rightarrow\text{m}(\angle{\text{y}})=0^\circ$
Hence, measure of complementary angle of $90^\circ $ is $0^\circ .$
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