Question

sin(x+pi) in terms of x

Answer 1

Does this equal 0?

Answer 2

idk thats y i need help, this is how they gave it to me , it didnt say 0

Answer 3

sin(x+pi) is in the third quadrant.
in the third quadrant only tan value is positive.
pi=180 here
sin(x+pi)=-sinx

Answer 4

sin(180+x)=-sinx

Answer 5

Does that make sense @rubyhunter?

Answer 6

right ajprincess

Answer 7

yea but is -sinx what they mean by in terms of x?

Answer 8

yaa

Answer 9

okay thanks

Answer 10

welcome:)

Answer 11

you can try this using the identity
sin(x + pi) = cos(x)sin(pi) + sin(x)cos(pi)
sin(pi) = 0
cos(pi) = -1
so you get

cos(x)(0) + sin(x)(-1)
= -sinx