Trying to remember how to calculate sin^3(pi/4)? Feeling very foolish that it's not coming to mind. I know that the pi/4 value is (sqrt 2)/2. Trying to remember how the cubed sine impacts it. thanks for the help. :)

Question

amistre64 · Answer

do you recall the sin of pi/4?

anonymous · Answer

$$\sqrt{2}/2$$

amistre64 · Answer

$$\left(\frac {2^{1/2}}{2}\right)^3$$
$$\Large\frac {2^{(3*\frac12)}}{2^3}$$

amistre64 · Answer

it just notational, but these are equivalent
$$sin^3(x)\to\ [sin(x)]^3$$

anonymous · Answer

That was what I was thinking but my answer kept coming up different than what I was seeing in the book. I was trying to work it out to see where my error was coming. Looks like it was simple math issues rather than concept problem. Thanks for the help.

amistre64 · Answer

youre welcome