# Advanced Math

Find the values of x for which the equation sin x = -1 is true

2 pi n

pi/2 + 2 pi n

pi + 2 pi n

3 pi/2 +2 pi n

Can someone please help. I don't understand how to do this.

1. 👍 0
2. 👎 0
3. 👁 72
asked by Kate
1. Sin x = -1 when x is 270 degrees, which is 3 pi/2 radians. If you add (2 n pi) to that, where n is an integer, you get the same value for the sin.

Therefore the correct answer is the last one.

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2. 👎 0
posted by drwls

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