polar coordinates and equations 2

The polar coordinates of this point ( 1 , -1 )

• ( $\sqrt{2}$ , $\frac{-\pi}{4}$ )

• ( 0 , $\frac{-3\pi}{4}$ )

• (2 , $\frac{\pi}{4}$ )

• (2 , $\frac{5\pi}{3}$ )

Tags

CCSS.HSN.CN.B.4

Which of the following is not correct :

• $r^2=x^2+y^2$

• $x=r\cos\theta$

• $\theta=\tan^{-1}\left(\frac{x}{y}\right)$

• $y\ =\ r\sin\theta$

Tags

CCSS.HSN.CN.B.4

The graph of r = 6

• line

• parabola

• hyperbola

• circle

Tags

CCSS.HSF-IF.C.7D

The rectangular coordinates of ( 2 ,  $30\degree$  )

• ( 1 ,  $\sqrt{3}$  )

• ( $\sqrt{3}$   , 1)

• (  $-\sqrt{3}$   , -1)

• (-1 ,  $-\sqrt{3}$  )

Tags

CCSS.HSN.CN.B.4

The polar equation of y = 3

• r = 3 cos $\theta$

• r = 3 sec $\theta$

• r = 3 sin $\theta$

• r = 3 csc $\theta$