I suppose you mean
Differentiate one term at a time.
Rewrite the first term as
Then the product rule says
Then with the power and chain rules,
Simplify this a bit by factoring out :
For the second term, recall that
Then by the chain rule,
So we have
and we can simplify this by factoring out to end up with
Answer:
71 degrees
It's the measure of angle 1.
The team won 104 games
160 * 0.65 = 104