Answer:
20.9 ft
Step-by-step explanation:
This is a right triangle trigonometry question because N is 90 degrees. MN is adjacent to M and LM is the hypotenuse. Adjacent any hypotenuse use the cosine function.
plug in known values
switch cos(20) and x using the products property
plug into calculator to get 20.9 ft
Tan(theta)=opposite/adjacent
Tan(31)=x/10
(Tan(31))10=x
X=6.0086
The mistake is in Step 1. The solver should have also squared 
when squaring the other side of the equation.
<h3>Correctly solving</h3>
Answer:
x = 49
Step-by-step explanation:
The third side of the largest of the inner triangles:
= 
=
The side that continues next to 33: x -33
Applying similarity property on right triangles:
Hope this helps
It would be either C or A, sorry I cant help anymore than that
