Question 1033695: Find the angle between the vectors <-8,-7> and <7,-3>. Carry your intermediate computations to at least 4 decimal places. Round your final answer to the nearest degree.
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! Find the angle between the vectors <-8,-7> and <7,-3>. Carry your intermediate computations to at least 4 decimal places. Round your final answer to the nearest degree.
-----
Note: -8,-7 is in QIII ; reference angle is arctan(-7/-8) = 41.19 degrees
In QIII that is 180+41.19 = 221.19 degrees
--------
Note:: 7,-3 is in QIV ; reference angle is arctan(-3/7) = 23.20
In QIV that is 360-23.20 = 276.80
=======
Ans:: Angle between = 276.80 - 221.19 = 55.6 = 56 degrees when rounded
------------------
Cheers,
Stan H.
--------------
|
|
|
