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vivado [14]
3 years ago
15

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

Mathematics
2 answers:
Nutka1998 [239]3 years ago
6 0

Answer:

Step-by-step explanation:

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

Tems11 [23]3 years ago
3 0

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

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