Multiply both numerator and denominator with 8+5i. Then you get
Answer:

Step-by-step explanation:
We have the angle in standard post has a sine ratio of

This means the opposite side length of the corresponding right triangle is 9 units and the hypotenuse is 41 units.
Using Pythagoras Theorem, the adjacent side length can be found using:

This implies that:




The cosine ratio is adjacent over hypotenuse.

Since we are in the second quadrant, the cosine ratio is negative;

The answer to the nearest tenth is 34.2
B=4-a sorry if that’s not correct but I think it is
Answer:

Step-by-step explanation:
first we write 1 4/5 as an improper fraction:

Now we multiply :
