Question

If $x$ is an obtuse angle, then which of the following is true?

• A. $0^o\le x\le {90}^o$
• B. ${90}^o<x<{180}^o$
• C. ${180}^o<x\le {270}^o$
• D. ${270}^o<x<{360}^o$

Answer 1

The correct option is B ${90}^o<x<{180}^o$

An angle greater than ${90}^o$ but less than ${180}^o$ is called an obtuse angle.

Thus, if $x$ is an obtuse angle, then ${90}^o<x<{180}^o$.