(a) If logo a = 1.3010 and log\(_{10}\)b - 1.4771. find the value of ab
MATHEMATICS
WAEC 2019
(a) If logo a = 1.3010 and log\(_{10}\)b - 1.4771. find the value of ab
(b)
.png)
(ii) angle BAC.
Explanation
(a) finding a = 10\(^{1.3010}\) and b = 10\(^{1.4771}\)
Then, ab = 10\(^{1.3010}\) x 10\(^{1.4771}\) = 10\(^{2.4771}\) = 599.9
(b)(i) they were expected to find < ABC = 180° - 62° = 118°
Exterior < AOC a 2 x 118° - 236° (< at centre is twice angle at the circumference)
Interior < AOC = 360° - 236° = 124°(angle at a point) as required.
(b)(ii) < BAC in 180° - 39° - 118° = 23° (sum of angles of a triangle)
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 Your email address will not be published.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 *