Posted by Don on Saturday, December 17, 2011 at 2:11pm.
Eight Fundamental Identities
Sec thada  Cos thada on one side
tan thada sin thada on the other side
How do you do this ???

Math C30  bobpursley, Saturday, December 17, 2011 at 2:31pm
http://greece.mrdonn.org/alphabet.html Impress your teacher, use the right symbols and spelling.
SecThetacosTheta=TanThetaSinTheta
Your teacher is just too easy.
multiply each side by cosTheta
1cos^2 Theta=sin^2 Theta
sin^2 Theta=sin^2 Theta