How do I find the exact value of cos(2sin^-1(12/13))?
Reviewing for a trig exam and saw this. I don't remember learning anything like it. Thanks in advance!
Reviewing for a trig exam and saw this. I don't remember learning anything like it. Thanks in advance!
1 Answer
Oct 17, 2017
Explanation:
Write,
Hence,
I hope that helps!