72 people took a violin exam. Before the exam, 21 people predicted that they would pass, and the rest predicted they would fail.
1 answer:
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Firstly , we can draw diagram
we can see that
adjacent = 850
opposite =250
so, we can use tan formula
16.38
so,
angle of depression is 16.38 degree........Answer
It's easy to show that is strictly increasing on
. This means
and
Then the integral is bounded by