TRUEBOSS72
TRUEBOSS72 TRUEBOSS72
  • 15-08-2018
  • Mathematics
contestada

PLEASE HELP ME WITH BOTH QUESTIONS
THANKS!!

PLEASE HELP ME WITH BOTH QUESTIONS THANKS class=
PLEASE HELP ME WITH BOTH QUESTIONS THANKS class=

Respuesta :

mathmate
mathmate mathmate
  • 15-08-2018

First one:

cos(A)=AC/AB=3/4.24

cos(B)=BC/AB=3/4.24

Cos(A)/cos(B)=AC/AB / (BC/AB) = AC/AB * AB/BC = AC/BC=3/3=1


Second one:

To solve this problem, we have to ASSUME AFE is a straight line, i.e. angle EFB is 90 degrees. (this is not explicitly given).

If that's the case, AE is a transversal of parallel lines AB and DE.

And Angle A is congruent to angle E (alternate interior angles).

Therefore sin(A)=sin(E)=0.5

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