In δabc, m∠cab = 30°, m is the midpoint of ab so that ab = 2cm. find the angles of the triangle. find ab if bc = 7 ft.

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.

you can first factor out the n to get n(1+5). we know that 1+5 is 6, so we just have 6n.