The measurement of EF is 1.98
Explanation:
Given that DEF is a right angled triangle.
Also, given that ∠E is a right angle, m∠D = 26° and DF = 4.5
We need to determine the measurement of EF.
<u>The measurement of EF:</u>
The measurement of EF can be determined using the trigonometric ratios.
Thus, we have,

where
,
and 
Substituting the values, we have,

Multiplying both sides by 4.5, we get,

Also, given that sin 26° = 0.44
Thus, substituting the value, we get,


Thus, the measurement of EF is 1.98