Answer:
Length of B is 7.4833
Step-by-step explanation:
The vector sum of A and B vectors in 2D is
And its magnitude is:
Where
Using the properties of the sum of two angles in the sin and cosine:
Sustituying in the magnitud of the sum
Solving for B
Sustituying the value of the magnitud of A
Its equilateral ( all sides are equalA0
Also its acute.
D and F
Answer: its 218
Step-by-step explanation: you just have to subtract 250 minus 32