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January 28, 2015

January 28, 2015

Posted by **Angela P.** on Friday, January 13, 2012 at 11:20am.

1.Round r to nearest hundredth and theta to nearest hundredth of RADIAN

My work:

r^2 = x^ + y^2

r^2 = 4^2 + 6^2

r^2= 16 +36

r^ =52

r=7.21

I'm stuck on how to do theta in Radians, could you please assist

- Trig-Please check -
**Damon**, Friday, January 13, 2012 at 11:34amtan theta = 6/4 = 1.5

if your calculator does radians just do tan^-1 of 1.5

if it does degrees only then

tan^-1 1.5 = 56.3 degrees

56.3 * pi/190 = .98 radians

- Trig-Please check -
**Angela P.**, Friday, January 13, 2012 at 11:47amThank you Damon-I reworked it on the calculator to make sure I knew what I was doing-thank you again for helping

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