Answer:
3. 7.2
4. 20
Step-by-step explanation:
Answer:
In my sketch the angle between their flights is 135°
So wouldn't we just have the cosine law??
Step-by-step explanation:
x^2 = 120^2 + 150^2 - 2(120)(150)cos135°
carry on, take care with the cos135, since it will be negative
it's a parallel line so the gradient stays the same
y= x + c
substitute in the point specified
2 = 2 + c
2-2=0
so the answer is y=x
hope this helps!
Answer:

Step-by-step explanation:
Given


Required

Substitute 4 for n in 


Substitute 121.5 for 


Solve for a1


So, we have:

