Question

The following graph is f(x) = sin(x).
http://static.k12.com/eli/bb/817/-1/0/2_36845_44974/-1/7104fb85596b9868e1851c4b196cf5658aba880c/media/0108e31bc77d8a52415f1feb677848579a20176c/mediaasset_652037_1.png
True
False

Answer 1

true

Answer 2

\(\sin(90^\text{o}) = 1\)

On graph, it shows that at \(90^\text{o}, ~ f(x) = -1\)

So apparently it's actually f(x) = -sin(x) so it's false.

Answer 3

opps