Two angles (a + 31) and (b - 49°) are adjacent angles on a straight
MATHEMATICS
WAEC 1996
Two angles (a + 31) and (b - 49°) are adjacent angles on a straight line. Which of the following is true
- A. a + b = 198°
- B. a + b = 180°
- C. a + b = 162°
- D. a + b = 100°
Correct Answer: A. a + b = 198°
Explanation
a + 31 + b - 49 = 180° (sum of angles on str line)
a + b - 18 = 180°
a + b = 180 + 18
a + b = 198°
Post an Explanation Or Report an Error
If you see any wrong question or answer, please leave a comment below and we'll take a look. If you doubt why the selected answer is correct or need additional more details? Please drop a comment or Contact us directly. Your email address will not be published. Required fields are marked *