Question

expand sinx in powers of (x- pi/2) and then using it to approximate sin 91 degree!! Help plzzz!!

Answer 1

i already expanded the series! but cannot understand how to find the value of sin 91 degree!!

Answer 2

\[sinx = 1-\frac{ (x-\frac{ \Pi }{ 2 })^{2}}{2!}+\frac{ (x-\frac{ \Pi }{ 2 })^{4}}{4!}-......\]

Answer 3

@wio help plzzz!!

Answer 4

Um, \(x=91\)

Answer 5

but it is in degrees!! how to put the value??

Answer 6

\[
91^\circ = \frac{91\pi}{180}
\]

Answer 7

yeah then what would be the value?? would it be 1.588 ??

Answer 8

Just plug it in.

Answer 9

thanks man!! appreciate it!!