# Math Trig Find Quadrant I II III IV

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In which quadrant is the terminal side of angle A?

A = -5π/6

• Math Trig Find Quadrant I II III IV -

Think of degrees if radians give you trouble

so (-5/6)π radians = -(5/6)(180)° = -150°
so going clockwise 150° would put you into quadrant III

• Math Trig Find Quadrant I II III IV -

Hello, i cant find out the values of x1,x2 can u help me please?

sinx=2sinx+1
0=sinx+1
sinx=-1 <0 (III;IV)
sinx=270*

x1= ?
x2= ?

• Math Trig Find Quadrant I II III IV -

to Fred:
sinx=2sinx+1
0=2sinx+1-sinx
0=sinx+1
sinx=-1

We are going to look for the values of x.
sin is < 0 meaning, the values are either in quadrant III/ IV.
First, identify the rad equivalent where sin equates to -1.

And that would be 270 degrees or 3pi/2 located at the 3rd quadrant.

The range for the 3rd quadrant is 180-270 degrees, and the range of for 4th quadrant is from 270-360 degrees.

if you have a limit such as the values are only within [0, 2pi] then you only need 3pi/2 since its within the 3rd and 4th quadrant.

x1= 3pi/2. x2= 3pi/2.

• Math Trig Find Quadrant I II III IV -

In which quadrant does the terminal side of a 240° angle in standard position lie?