# Pre-Calculus

posted by .

Can you show me how to find the rectangular equation:
r=2cos(theta) + 3 sin (theta)
All I need is an example to work off I was absent today from Pre-Calc and I have homework to do and no explanation with them-Please help with this one Thank you

• Pre-Calculus -

sqrt(x^2+y^2) = 2 x/sqrt(x^2+y^2)+3y/sqrt(x^2+y^2)

x^2+y^2 = 2 x + 3 y

y^2 - 3 y = -x^2 + 2 x

• Pre-Calculus -

Thank you

## Similar Questions

1. ### Pre-Calculus

translate this polar equation into a rectangular form: rsin(2theta)=sin(theta) My answer: r2sin(theta)cos(theta)=sin(theta) 2rcos(theta)=1 2x=1 x=1/2 This is the only answer I can get and someone told me it's wrong. Would someone please …
2. ### Pre-Calc

Can you show me how to find the rectangular equation of r=2costheta + 3 sin theta All I need is an example to work off I was absent today from Pre-Calc and I have homework to do and no explanation with them-Please help with this one …
3. ### Pre-Calculus

Please check: 1.Find polar equation of x^2 + y^2 = 10y r^2 for x^2 + y^2 and sin(theta sin for y =r^2=10sin(theta) 2.Find polar equation: y=5 r=5/sin 3.Polar equation is r=2costheta + 3 sin theta Find rectangular equation x^2+y^2 =x^2 …

Calculate the exact values of the cot(theta) and sin(theta) for the acute angle theta if sec(theta)= the square root of 6. Thank you so much!
5. ### Pre-Calc

if (0,-7) lies on the terminal side of angle theta in standard position, find each value sec(theta) , cot(theta) and sin(theta)
6. ### Pre-Calc/Math

if (0,-7) lies on the terminal side of angle theta in standard position, find each value sec(theta) , cot(theta) and sin(theta)
7. ### Pre Calculus

Approximate, to the nearest 0.01 radian, all angles theta in the interval [0,2pi) that satisfy the equation. a.) sin theta=-0.0135 b.) cot theta=-2.731 Thank you for helping! I appreciate it!
8. ### Pre calculus

in the equation r= 5/(sin theta +2cos theta) the letters r and theta represent polar coordinates. Write the equivalent equation using rectangular coordinates. Thanks :)
9. ### pre calculus

change the equation to rectangular coordinates: r= 2(sin theta -cos theta)
10. ### Pre- calculus

Change the equation to rectangular coordinates: r= 2(sin theta-cos theta)

More Similar Questions