Thursday

February 26, 2015

February 26, 2015

Posted by **Katie** on Saturday, June 7, 2014 at 11:51pm.

a. (5,(π / 4))

b. (-2,(π / 6))

NOTE: I tried to do these myself and got that:

a= (4.99,0.27)

b=(-1.99,-0.11)

Which I know these are wrong, so I don't know how to do them..

- Pre-Calc -
**Reiny**, Sunday, June 8, 2014 at 12:11amFor any (r,Ø)

x = rcosØ, y = rsinØ

so

x = 5cos(π/4) , y = 5sin(π/4)

x = 5√2/2 , y = 5√2/2

so you have the point (5√2/2 , 5√2/2)

(I don't see why you would want to write that in decimals, since you have to round it)

appr (3.5355 , 3.5355)

do the 2nd question in the same way

**Answer this Question**

**Related Questions**

TRIGONOMETRY - Can you check my work, please? This is for a trig study guide for...

pre-calc help - Convert the rectangular coordinates to polar coordinates with r...

pre-calc help - Convert the rectangular coordinates to polar coordinates with r...

Trig (math) - 1.) Find all solutions of the equation. Leave answers in ...

trig - Given the polar coordinates of a point, how do I find the rectangular ...

Pre-Calculus - Find the rectangular coordinates of the point with the given ...

Pre-Calculus - Find the polar coordinates of each point with the given ...

Precalc/Trig - I don't understand how to do these problems: Find two pairs of ...

trig - Convert the rectangular coordinates to polar coordinates, using radian ...

Precal - The point (r,theta) in polar coordinates is (7,5) in rectangular ...