Find the Exact Value sin(270 degrees )

Problem

sin(270)

Solution

1. Identify the position of the angle 270 on the unit circle.

2. Determine the coordinates (x,y) at 270 which is located on the negative y-axis.

3. Recall that the coordinates at this point are (0,−1)

4. Apply the definition of the sine function on the unit circle, where sin(θ)=y

5. Substitute the y-coordinate to find the value.

Final Answer

sin(270)=−1

Want more problems? Check here!