Is sin(3.6) Negative in Quadrant III?

Chadi B Ghaith · Dec 18, 2016

Why is sin(3.6) Negative? Why is sin(3.6) negative? It makes no sense. It should be positive between -90 and 90 degrees.

blue_leaf77 · Dec 18, 2016

It makes sense if 3.6 is in radian.

Mark44 · Dec 18, 2016

Chadi B Ghaith said:

Why is sin(3.6) NEGATIVE? Why is sin(3.6) negative? It makes no sense. It should be positive between -90 and 90 degrees.

sin(3.6°) > -0, but 3.6 by itself is considered to be in radian measure.

Also,if x is between -90° and 0°, sin(x) is negative.

Chadi B Ghaith · Dec 19, 2016

Mark44 said:

sin(3.6°) > -0, but 3.6 by itself is considered to be in radian measure.

Also,if x is between -90° and 0°, sin(x) is negative.

Thank you Mark44.

SophiaRivera007 · Dec 22, 2016

Because, π<3.6<3π/2 ... 3.6 radians lies in quadrant III where sine values are negative.

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