SOLUTION: Find a cofunction with the same value as the given expression: cos pi/15
This is what I have come up with so far...
cos(pi/2-theta)=sin(theta) so,
cos(pi/2-pi/15)...pi/2-pi/
Algebra ->
Trigonometry-basics
-> SOLUTION: Find a cofunction with the same value as the given expression: cos pi/15
This is what I have come up with so far...
cos(pi/2-theta)=sin(theta) so,
cos(pi/2-pi/15)...pi/2-pi/
Log On
Question 884441: Find a cofunction with the same value as the given expression: cos pi/15
This is what I have come up with so far...
cos(pi/2-theta)=sin(theta) so,
cos(pi/2-pi/15)...pi/2-pi/15=
15pi/30-2pi/30=
13pi/30
Is that correct? sin 13pi/30 ?
Thank you in advance!
