First, start with your given. If your given has the words: bisect or midpoint, then the next step will be the definition of that.
She may conclude that in her hometown, a majority of people experience greater happiness thanks to positive relationships. However, in order to apply this to a greater population, she will have to use a larger sample of people.
Notice the picture
we have, the opposite side
the angle
and we want the hypotenuse
so recall your SOH CAH TOA

which one has all that? low and behold, is Ms Sine,
so let's bother Ms Sine

make sure your calculator is in Degree mode, since the angle here is in degrees, as opposed to Radian mode
Answer:
105°
Step-by-step explanation:
< 3 = 50° + 55° { exterior angle of a triangle is equal to the sum of two opposite interior angles }
<3 = 105°