HEL PLEASE Julian wants to use a sheet of fiberboard 21 inches long to create a skateboard
ramp with a 24° angle of elevation from the ground. How high will the ramp
rise from the ground at its highest end? Round your answer to the nearest
tenth of an inch if necessary.

d. vertex

step-by-step explanation:

i belive those are the ones that are under 90 degreese.

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