A contractor needs to repair a sign on a building, At a distance away from the base of the building, he estimates that the angle of elevation to the sign
is 50°. He then moves 30 m closer to the base of the building and estimates
the angle of elevation to be 60°. How high above the ground is the sign?​

y do u put "subscirbe to ence" on a app for ppl who need with their work?

step-by-step explanation:

given that there are two triangles j'k'l' and jkl>

the former is got by dilating the second one.

when drawn on a grid, (graph paper) coordinates of vertices of first triangle is

(6,12)j, (9,6)k and (12,9)l

side jk has length = distance between j and k

=

side j'k'=distance between j' and k'

=

ie j'k'l' has sides 1/3 of that of corresponding sides of jkl.

hence scale factor of 1/3 is used to get j'k'l'from jkl

there are 25 people coming to the party

step-by-step explanation:

the text says that there will be 22 children at this party, 1 teacher, and 2 parents. so if you add them all together (22+1+2) it will equal 25. (=25)

answer is (b.

164 ft2)

a base  

18

b base  

7

h height  

8