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/

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/

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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!

Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
Yes, well done.

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