Question

evaluate sin(3(pi)/4)

Answer 1

what kind of an evaluation?

Answer 2

0.04110456391

Answer 3

all the question says is evaluate

Answer 4

it the sin of a 45 degree angle that has been scaled by 3 puttingit into the 2nd quadrant

Answer 5

sin((3(`))/(4))

Multiply 3 by ` in the numerator.
sin((3*`)/(4))

Multiply 3 by ` to get 3`.
sin((3`)/(4))

Take the sine of (3`)/(4) to get (~(2))/(2).
(~(2))/(2)
' means pi

Answer 6

and ~(2) might mean sqrt(2) ?

Answer 7

got it

Answer 8

find
\[\frac{3\pi}{4}\] on then unit circle on last page of cheat sheet. then look at the coordinates of that point. first one is cosine, second one is sine