In \(sin(X+30)^o=cos40^o\),find X
MATHEMATICS
WAEC 1998
In \(sin(X+30)^o=cos40^o\),find X
- A. 10o
- B. 20o
- C. 50o
- D. 60o
Correct Answer: B. 20o
Explanation
\(sin(X+30)^o=cos40^o\\
X+30+40=90^o\)complementary angles
\(X=20^o\)
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 Your email address will not be published.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 *