Answer:
-8+i
Step-by-step explanation:
The idea is to use the tangent line to at in order to approximate .
We have
so the linear approximation to is
Hence and .
Then
B. 210
800/560 = 1.42857142857
300/1.42857142857= 210
36 degrees
The whole shape is 90 degrees.
90 - 54 = 36