First, you need to know what a complementary angles are.
They are two angles that add up to 90 degrees.
If the number multiplied by 2 is 90, just to 90/2.
This gives you 45
The only correct statements are the second one and the last one.
<span>123.2 is the answer hope it helps</span>
Answer:
True
Step-by-step explanation:
Take
, so that
and
. Note that this assumes
and so requires
.
Now take
, so that
. Note that for this invertibility condition to hold, we require that
, which means
. But since we already fixed
with the previous substitution, we thus have
, which in turn restricts us to
. So with this substitution, we have
, which gives
Now over the interval
, we have
, which means
, and so the integral is equivalent to