O Watch help video An electrician leans an extension ladder against
the outside wall of a house so that it reaches an
electric box
31
feet
up.
The ladder makes an
angle of 75° with the ground. Find the length of
the ladder. Round your answer to the nearest
hundredth of a foot if necessary.

d. bc = 12 and ef = 16

step-by-step explanation:

we are given that δabc : δdef such that .

also, it is given that

so, from the options, we need that .

a.

b.

c.  

d.

as, we can see that only option d gives the same ratio as i.e. .

hence, the possible lengths are bc = 12 and ef = 16.

step-by-step explanation:

y= 2x+7

changed to y= 5x +7

as slope is increased from 2 to 5

therefore it would be less steeper

so, option d) is correct