Which trig ratio would you use to solve for the missing angle measure? Cos
3
_
25

Cos
25
_
3

Sin
3
_
25

Sin
25
_
3

Sanya noticed that the temperature was falling at a steady rate of 1.4 degrees every hour from the time that she first checked her outdoor thermometer. by 6 a.m., the temperature had fallen 21 degrees. which expression can you use to find how many hours earlier she had first checked the thermometer?