BC AB AC
Step-by-step explanation:
the longer the side is visually detected ok
Ok what is it that u need
Cos(2 arctan(4/3)) = cos(2 arccos(3/5)) = cos^2(arccos(3/5)) - sin^2(arccos(3/5)) = cos^2(arccos(3/5)) - sin^2(arcsin(4/5)) = (3/5)^2 - (4/5)^2 = 9/25 - 16/25 = -7/25.
D
Because it is the same while number just with a extra .9
I need the answer too... someone help
