Answer: 4.5
Step-by-step explanation:

You formatted the equation wrong for the setting your calculus on i would recommend using a Ti-34
Answer:
hypotenuse is not a rational number
Step-by-step explanation:
In a Right angled triangle , if a, b are the sides and h be the hypotenuse then relationship between them is given by
=
+ 
Here,
a= 4 in. [Given]
b = 6 in. [Given]
Thus ,
=
+ 
= 16 + 36
= 52.
h =
= 7.21110255......
Clearly, h is not a rational number
Answer:
60
Step-by-step explanation:
360/6=60
Using formula sin^2 x +cos^2 x = 1 you get 1 - cos^2(9x) = sin^2(9x)
so in this way this fraction will be rewrited
sin9x/(1-cos^2(9x) = sin9x / sin^2(9x) = 1/sin9x