Question

What is the y-value of sin(x) when x = -90°?
Help please :)

Answer 1

I already did this one

Answer 2

the other one was 180 is it the same answer?

Answer 3

it is done in the same fashion

Answer 4

oh okay thanks

Answer 5

Except if x=-90 degrees, the diagram should look like this:

Answer 6

I used the even-odd property to determine that sin(-90) is equal to -sin(90)

Answer 7

recall (cosine, sine)

Answer 8

but I can also, use the even-odd property to get the same solution