Answer:
Step-by-step explanation:
Since this is a right triangle, we will use a right triangle trig identity to solve our problem. The side opposite the reference angle A is given as 5, and the side adjacent to the reference angle is given as 7. The trig ratio that uses the sides opposite and adjacent is the tangent ratio:
[tex]tanA=\frac{5}{7}[/tex]
Hit the 2nd button on your calculator then the tan button which displays:
[tex]tan^{-1}([/tex]
Enter 5/7 after that open parenthesis and hit = to get that
A = 35.54°
