Question

Find the distance between the origin and the point ( 12, -5)​

Answer 1

Answer:

13.....................

Answer 2

The old and good formulas.

The old and good formulas.x=rcost=12

The old and good formulas.x=rcost=12y=rsint=−9

The old and good formulas.x=rcost=12y=rsint=−9x2+y2=r2=144+81=225

The old and good formulas.x=rcost=12y=rsint=−9x2+y2=r2=144+81=225r=15

The old and good formulas.x=rcost=12y=rsint=−9x2+y2=r2=144+81=225r=15yx=tant=−912=−34

The old and good formulas.x=rcost=12y=rsint=−9x2+y2=r2=144+81=225r=15yx=tant=−912=−34t=−arctan0.75

The old and good formulas.x=rcost=12y=rsint=−9x2+y2=r2=144+81=225r=15yx=tant=−912=−34t=−arctan0.75tan(−θ)=−tanθ=tan(2π−θ)

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