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For Which Angles Θ Is Sin Θ Negative? [Solved]

The sine ratio is y/r, and the hypotenuse r is always positive. So the sine will be negative when y is negative, which happens in the third and fourth quadrants.

Trigonometry - Negative angle identities

If you have a

PreCalculus - Trigonometry (12 of 54) What Are Negative Angles?

In this video I will explain what are

Trigonometry - Quadrant rule : Solving Sin θ = negative value : ExamSolutions

Tutorial on using the quadrant rule in trigonometry. YOUTUBE CHANNEL at https://www.youtube.com/ExamSolutions …