Thursday

July 31, 2014

July 31, 2014

Posted by **Hannah** on Wednesday, March 31, 2010 at 9:37pm.

Please explain. I really do not understand these.

- Math -
**Reiny**, Wednesday, March 31, 2010 at 10:05pmThe three vectors can be written as

(70cos(-30),70sin(-30)) or (60.622, -35)

(40cos45,40sin45), or (28.2843, 28.2843)

(60cos135,60sin135) or -42.4264, 42.4264)

so the sum of those three vectors is

(46.4799, 35.7107)

the magnitude of that is

√(46.4799^2 + 35.7107^2) = 58.614

the direction would be arctan(35.7107/46.4799) = 37.535°

- Math -
**Hannah**, Wednesday, March 31, 2010 at 10:45pmThank You!

**Related Questions**

Trigonometry - Find the magnitude and direction of the resultant of two forces ...

Math - Thanks in advance, these problems have been stumping me. Please include ...

Math/Physics - Thanks in advance, these problems have been stumping me. Please ...

Pre calc - Thanks in advance, these problems have been stumping me. Please ...

Pre-calc - Thanks in advance, these problems have been stumping me. Please ...

math - two forces, one of 35 pounds and the other 62 pounds, act upon the same ...

Calculus - Three forces with magnitudes 75 pound, 100 lb, and 125 pound act on ...

Calculus help! - Three forces with magnitudes 75 pound, 100 lb, and 125 pound ...

math/physics - Forces with magnitudes of 2000 newtons and 900 newtons act on the...

Math. - 1. At 4:00 A.M. the outside temperature was -28. By 4:00 P.M. it rose 38...