Answer:
The answer is 3 and 7; 4 and 8.
Step-by-step explanation:
IDK how to explain this.
2.5 in
71°
The cosine of an angle is equal to the sine of its complement:
cos(19°) = sin(90° -19°) = sin(71°)
Comparing to the given expression, we see that x = 71°.