The answer is this!
From a top of a building 20 m high if the angle of elevation top of a vertical pole is 30 degree.and the angle of depression of
foot from the same pole is 60 degree . find the height of the pole
1 answer:
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Hello and Good Morning/Afternoon:
<u>Let's take this problem step-by-step</u>:
<u>What does the information want:</u>
- value of x
- value of y
<u>Let's gather some information</u>:
- ΔA'BC' and ΔABC are similar triangles
⇒ Angle B is shared by both triangles
⇒ Angle A' and A are the same, as they are both on parallel
lines, A'C' and AC, and both angles are formed with the
same line AB
⇒ by the <em>Angle-Angle Theorem*</em>, they are similar triangles
<u>If they are similar triangles</u>:
⇒ their side lengths are proportional to each other
- let's find x's value
⇒ let's set up a proportion
- let's find y's value
⇒ let's set up a proportion
<u>Answer:</u>
- <u>x= 17.143</u>
- <u>y = 26.25</u>
Hope that helps!
#LearnwithBrainly
Answer:
left
Step-by-step explanation:
The question says she used of it, so she probably used
of it. I'm assuming this is an error in the question, and it should be asking how much is left. To solve for that:
-
make denominators equal
( ×
) - (
×
)
-