WAEC - Further Mathematics (2019 - No. 7)
Given that g ; x \(\to\) 3x and f ; x \(\to\) cos x. Find the value of g\(^o\) f(20\(^o\))
0.50
0.94
2.60
2.82
คำอธิบาย
f(20\(^o\)) = cos 20\(^o\) = 0.9397
g(0.9397) = 3(0.9397)
= 2.82
f(20\(^o\)) = cos 20\(^o\) = 0.9397
g(0.9397) = 3(0.9397)
= 2.82