Question

The measure of a Quadrantal angle is an integral multiple of

• A. ${90}^o$
• B. ${180}^o$
• C. ${360}^o$
• D. ${270}^o$

Answer 1

The correct option is A ${90}^o$

$\text{Quad}=\frac{1}{4}$ So $\frac{1}{4}$ of ${360}^{\circ }$ is $\frac{1}{4}\times {360}^{\circ }={90}^{\circ }$

The measure of a Quadrantal angle is an integral multiple of ${90}^{\circ }$