- Apr 22, 2015
If they are reciprocals, do it mean that w/z cancels z/w ? If yes, why cant we also say cos(0) = 1/Sec(0) ? I used 0 to represent tita
Yes you can - as long as \(\displaystyle sec(\theta) \ne 0 \)If yes, why cant we also say cos(0) = 1/Sec(0)
No. It means that you may write each as the reciprocal of the other.If they are reciprocals, [doesd] it mean that w/z cancels z/w ?
So grateful, and yes, I wrote the answer twice since the question came twice. Thanks for the tutorial as I will further the study here. However, for the formula or secant, cosecant and cotangent. I hear something like (ALL STUDENT LIKE CHEMISTRY) I wonder the application. Else it mean one just have to memorise them
Indeed it does. Good on ya.I wrote the answer twice since the question came twice.
Or, one could memorize cosine, sine, and tangent definitions, first. That way, you simply write their reciprocals, to get the other three. You'd only need to remember that the name secant is associated with cosine and the name cosecant is associated with sine.formula for secant, cosecant and cotangent ... [maybe] one just have to memorise them