Given that g ; x \(\to\) 3x and f ; x \(\to\) cos x. Find
FURTHER MATHEMATICS
WAEC 2019
Given that g ; x \(\to\) 3x and f ; x \(\to\) cos x. Find the value of g\(^o\) f(20\(^o\))
- A. 0.50
- B. 0.94
- C. 2.60
- D. 2.82
Correct Answer: D. 2.82
Explanation
f(20\(^o\)) = cos 20\(^o\) = 0.9397
g(0.9397) = 3(0.9397)
= 2.82
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