If the difference between two angles is a quadrantal angle, is one of them the reference angle?
Q. Example: 45degrees and 135degrees Since the difference is 90degrees (quadrantal angle), we can say that 45deg. is a reference angle of 135deg. Can this be considered a generalization?
Asked by Maki - Wed Nov 5 08:34:48 2008 - - 1 Answers - 0 Comments

A. How about 100 degrees and 10 degrees? The difference is 90 degrees but 10 degrees is not the reference angle of 100 degrees. (The reference angle of 100 degrees is 80 degrees).
Answered by JB - Wed Nov 5 08:40:31 2008

Pre Cal/ Trig: How do you add two reference angles?
Q. Explain why /4 + 5 /3 = /6 I don't understand how to arrive at this answer. another one is 5 -3 = I'm doing trigonometric for of complex numbers. I'm using the trgonometric form. Ex: 350 (cos( /12)+isin( /12))
Asked by srmilliken525 - Wed Apr 22 20:05:00 2009 - - 1 Answers - 0 Comments

A. It's not /6, it's 23 /12. are you sure your answer is correct?
Answered by AYS - Wed Apr 22 20:15:20 2009

Can someone help figure out this problem regarding reference angles and trig. functions?
Q. Rewrite each expression in terms of its reference angle, deciding on the appropriate sign (positive or negative). For example, sin(240 degrees) = -sin(60 degrees) a) sin(-45 degrees) b) cot(210 degrees)
Asked by AE - Mon Oct 12 01:04:04 2009 - - 1 Answers - 0 Comments