Answer
One similarity between the trigonometric functions $\sin \theta $ and $\cos \theta $ is that their values are both calculated by dividing by the hypotenuse side. One difference is that the $\sin \theta $ function refers to the opposite side, while $\cos \theta $ refers to the adjacent side.
Work Step by Step
The trigonometric ratios are as follows:
$ \sin \theta =\dfrac{opposite}{hypotenuse} $
and $ \cos \theta =\dfrac{adjacent}{hypotenuse}$
