Question

I am clueless and the book is no help. (sine of arccosine equation)
sin(2(cos^-1)√2/2)
please walk me through it, just the answer doesnt help.

Answer 1

HI!!!

Answer 2

does it help to know that \[\cos^{-1}(\frac{\sqrt2}{2})=\frac{\pi}{4}\]

Answer 3

hi

Answer 4

it should

Answer 5

then
\[2\times \frac{\pi}{4}=\frac{\pi}{2}\]

Answer 6

final answer is what you get when you find
\[\sin(\frac{\pi}{2})\]

Answer 7

so it would be the sine of pi/2?

Answer 8

yup

Answer 9

okay, Thanks very VERY much!

Answer 10

\[\color\magenta\heartsuit\]