Answer:
Height of the light house 
Step-by-step explanation:
Distance of light house from boat = 100 ft
Angle of elevation from boat to the top of light house = 2°
Height above water while taking measurement = 4 ft
The figure of the situation is shown below.
For Δ ABC



Multiplying both sides by 100.


∴ 
Height of the light house 
10 people can be sat in a round table then their are ten different ways to be seated
You are comparing side AB, angle ABD, and side BD in one triangle to side CB, angle CBD, and side BD in the other triangle. That is, you are comparing a Side, Angle, and Side in each triangle. The SAS postulate is the reason the triangles are congruent.
Answer:

Step-by-step explanation:
The picture of the question in the attached figure
we have that
-----> given problem
so
------> by central angle
we know that
The triangle UZV is an isosceles triangle
because
ZU=ZV=radius
so
-----> bases angle of the isosceles triangle
Remember that
The sum of the internal angles of any triangle must be equal to 180 degrees
so

substitute and solve for m<ZUV

Find the measure of angle YUV
we have that
------> by complementary angles
substitute the given value and solve for m<YUV

Answer:
z = 10
Step-by-step explanation:
the steps have been attached above