5х + y = 7 28x — бу = — 36

system of equation

1. no solution
2. one solution
3. infinite solution

2. one solution

this is the solution (3/29, 188/29)

Step-by-step explanation:

Hello! i hope this
since the cosine is the ratio of the adjacent side to the hypotenuse, you can see that cos 60° = ½. answer. according to the property of cofunctions (topic 3), sin 30° is equal to cos 60°. sin 30° = ½.