Answer:
Step-by-step explanation:
let cos^{-1}x=t
cos t=x
when x=1,cos t=1=cos 0
t \rightarrow 0
x^2 - 3x + 9 - 5x + 10 = 0
x^2 - 8x + 19 = 0
-5/8 ahhhhhhhhhhhhhhhhhhhhhhhhh
one column should be added first
Answer:sorry I can't see that
Step-by-step explanation: