danyfrag
danyfrag danyfrag
  • 24-09-2020
  • Mathematics
contestada

Find R and theta with the coordinates (-3,7).

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AL2006
AL2006 AL2006
  • 24-09-2020

"R" is the distance from the origin to the point.

R = √(-3² + 7²)

R = √(9 + 49)

R =  √(58)

R = 7.62

tangent (Θ)  =  7 / -3

Θ  =  arctan (7 / -3)

Θ  =  113.2°  counterclockwise from the x-axis

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