Step-by-step explanation:
tan x =opp/adj
x = tan-¹(8/20)
x =21.8 degree
but you are asked to find the angle of elevation so
angle of elevation + 21.8 + 90 = 180 degree .... basic rule of triangle
angle of elevation=180-90-21.8
angle of elevation=68.2 degree
Answer: For question 19 the answer is 2,862. For question 20 the answer is 840. I'm positive these are the answers. I hope this helped.
Answer:
above is the answer to the question, second picture for clear view
<span>we know that
the sum of the internal angles of a triangle is 180 degrees
so
in this problem
(10x−2)=128∘--------->; 10x=128+2---------> 10x=130------>; x=130/10
x=13°
the angles are
13°, 13°
and
the third angle is equal to
180-2*(13)=154°
the answer is
the measurement of one of the acute angles is 13 degrees</span>
Answer: 4in
Step-by-step explanation: We can write this as a proportion equation:
x
260
mi
=
1
in
65
mi
Multiply each side of the equation by
260
mi
to solve for
x
while keeping the equation balanced:
260
mi
×
x
260
mi
=
260
mi
×
1
in
65
mi
260
mi
×
x
260
mi
=
260
mi
×
1
in
65
mi
x
=
260
×
1
in
65
x
=
260
in
65
x
=
4in