90+80+90+x=360
260+x=360
x=100
Start with the slope formula.
Slope formula can be read as the second y minus the first
y over the second x minus the first x.
So for this problem, the second y minus the first y would be
5 - 2 and the second x minus the first x would be 8 - 4.
5 - 2 over 8 - 4 is 3/4.
So the slope of the line that passes through these points is 3/4.
Answer:
10.8
Step-by-step explanation:
i used a calculator
Answer:
60 °
Step-by-step explanation:
Applying the law of sine we have the following:
160 / Sin B = 80 / Sin 30 °
We solve for B and we have:
160 / Sin B = 80 / 0.5
160 / Sin B = 160
Without B = 160/160
B = Arc Sin (1)
B = 90 °
Now to calculate the other angle (true
course) would be:
A = 180 ° - (B + C)
A = 180 ° - (90 ° + 30 °)
A = 60 °
That is to say that true course is 60 °
