If triangle DEF is classified as equilateral, which statement must be true?

all three sides are congruent.

Step-by-step explanation:

it is equiangular.

sides are equal.

angles are equal.

all three sides are congruent.

so far i think you have the right thing going for you just remember soh cah toh

step-by-step explanation:

sine over hypotenuse

cosine   equals adjacent

tangent over hypotenuse

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