Answer: Hello mate!
Here we have a triangle rectangle, there is a very useful relation and mnemotechnic:
So-ca-toa:
this mean:
Sen(a) = (opposite cath)/hypotenuse
cos(a) = (adjacent cath)/hypotenuse
tan(a) = (opposite cath)/(adjacent cath)
now we want to know the value of cos(16°)
we know that the hypotenuse has 25 units, and the adjacent cathetus to the 16° angle has a length of 24 units.
then; cos(16°) = 24/25 = 0.96
