Answer:
cosθ= 
Step-by-step explanation:
Please see attached picture for full solution.
In the 4th quadrant, the cosine of an angle is positive.
The opposite side takes the negative sign in -⅞ since it is below the x-axis. Likewise, we reject
since x lies on the right side of the y axis.
Answer:
15.588 ft
Step-by-step explanation:
C. 110. This is because all triangles add up to equal 180*. So you add the two angles you have and subtract from 180.
Answer:
y = 6.5
Step-by-step explanation:
When triangles are similar, we can set up a proportion to compare the sides. I will have the "left" side on the bottom of the fractions, and the side I am solving for on the top.

[Cross multiply]
12y = 78
y = 6.5
Have a nice day!
I hope this is what you are looking for, but if not - comment! I will edit and update my answer accordingly.
- Heather
Answer:
I am not smart enough for that one
Step-by-step explanation:
because I am just built the same as you all