Question

Don't know where to start , please show steps if you do it!

Answer 1

Answer:

Step-by-step explanation:

$\frac{EF}{DF} =sin~26\\EF=DF *sin~26\\=4.5*0.44\\\approx ~1.98$

Answer 2

Answer: The length of EF is 1.98

Step-by-step explanation:

Looking at the right angle triangle DEF,

The hypotenuse is DF = 4.5

The adjacent side is DE

The opposite side is EF

The reference angle,# is 26 degrees.

To determine the length of EF, we would apply trigonometric ratio,

Sin# = opposite side/hypotenuse

Sin# is chosen because it contains the side that we want to determine and the given side. It becomes

Sin 26 = EF/4.5

Cross multiplying,

EF = 4.5Sin26 = 4.5 × 0.44 = 1.98