My Math Forum Why sin(x) expansion needs x to be mentioned in radians?

 Algebra Pre-Algebra and Basic Algebra Math Forum

 January 4th, 2018, 08:32 AM #11 Math Team   Joined: Jan 2015 From: Alabama Posts: 3,261 Thanks: 894 One definition of sine (and cosine) commonly used in Calculus texts is this: Set up a coordinate system with the unit circle, the graph of $x^2+ y^2= 1$. Starting at (1, 0), measure around the circumference a distance t. The coordinates of the end point are, by definition, (cos(t), sin(t)). In that case, t has no units because its length is just a multiple of the unit used in the coordinate system. The "radian" measurement is defined to fit that.

,
,
,
,
,
,
,
,
,

,

,

,

,

,

# why does taylor series of sin use radians

Click on a term to search for related topics.
 Thread Tools Display Modes Linear Mode

 Similar Threads Thread Thread Starter Forum Replies Last Post bentroy743 Algebra 1 December 29th, 2012 03:26 PM milly2012 Algebra 1 April 29th, 2012 08:26 AM Phazon Calculus 10 June 6th, 2011 05:08 PM nicolodn Algebra 8 October 21st, 2010 05:47 AM axelle Algebra 7 October 22nd, 2007 01:48 PM

 Contact - Home - Forums - Cryptocurrency Forum - Top