Imagine a right triangle where a and b are the legs and c is the hypothenuse.
Pitagora: a²+b²=c²
Divide by c
(a/c)²+(b/c)²=1
But a/c=sin(B) and b/c=cos(B)
Thus sin² + cos² = 1
i believe the correct graph is the bottom left
I am pretty sure it would be either .20 or .12.
Do you want the whole solution simplified or the alternative form?