Question

sin[cos−1(−1) + 4π]

Answer 1

What do you mean by cos−1(−1) ? \[\cos ^{-1}(-1)\]?

Answer 2

yes thats what I ment.

Answer 3

Do you know about the unit circle and that trigonometry is about the relationship between sides of triangle?

Answer 4

I know a little bit, but I do not fully understand it

Answer 5

I think you should read this http://www.mathsisfun.com/algebra/trigonometry.html

I could just give you the answer but you will just end up hating math and suffering for it :p.

Answer 6

lol thank you

Answer 7

Is this a multiple choice question? :P

Answer 8

not at all

Answer 9

Well you compute the equation inside the parenthesis first:
arccos(-1)+4pi
= 5pi

Then you take the sin of that:
sin(5pi) = 0

I think... lol.

Answer 10

omg omg your a lifesaver

Answer 11

Lol, good luck with your work!