Answer:
Step-by-step explanation:
You know that cos(x) = CA/BA = 9/14
.. x = arccos(9/14) ≈ 50° . . . . . . . . selection 3
Which problem do u need help with I can help u with all. All of them are scientific notation so it's easy and I will tell u an easy way to solve it
15- 10 divided by 21- -9 should give you your slope