Answer:
see explanation
Step-by-step explanation:
given
f'(x) = 12cos x - 4sin x, then
f'() = 12cos() - 4sin()
[ cos() = -cos(), sin( = - sin() ]
= -12cos() + 4sin()
= - 12 × + 4 ×
= - 6 + 2 ≈ - 2.536 ( 3 dec. places )
Answer:
the last one
Step-by-step explanation:
the formula is AS= 2(Pi)r^2 + 2(pi)rh r^2= r x r
the r is 3 because Radis is half of the dynamiter
and pi= 3.14
the h(ight) is 14
plug in the #'s
2(3.14)3^2+2(3.14)3 x 14
Answer:
Step-by-step explanation:
You just gave an expression, therefore:
Given =
m∠FGE = 5x+ 10
FC is perpendicular to AE
find out the value of x
to proof -
as we have given∠ FGE = 5x + 10
& FC is perpendicular to AE.
now by using the diagram as shown in below.
∠FGE +∠ FGA = 180 °
(By linear pair property)
as∠ FGE = 5x+10
than also∠ FGA = 5x+ 10
now put these values in the above equation
we get
5x+ 10 + 5x +10 =180°
10x = 160
x = 16°
hence the value of FGE becomes
FGE = 5×16 + 10
= 90 °
HENCE PROVED