► My Trigonometry course: https://www.kristakingmath.com/trigonometry-course
In this video, we've been asked to find the value of the trig function, or to say that the function is undefined. The easiest way to do this will be to redefine the functions in terms of sine and cosine only, instead of any of the other four circular trig functions (tangent, cosecant, secant, and cotangent).
Once we've redefined the function in terms of sine and cosine, then we can find the values of sine and cosine along the unit circle, and make substitutions into the function. We'll either find a real-number answer for the trig function at the given angle, or we'll get an answer that's undefined (for example, a zero-value in the denominator).
● ● ● GET EXTRA HELP ● ● ●
If you could use some extra help with your math class, then check out Krista’s website // http://www.kristakingmath.com
● ● ● CONNECT WITH KRISTA ● ● ●
Hi, I’m Krista! I make math courses to keep you from banging your head against the wall. ;)
Math class was always so frustrating for me. I’d go to a class, spend hours on homework, and three days later have an “Ah-ha!” moment about how the problems worked that could have slashed my homework time in half. I’d think, “WHY didn’t my teacher just tell me this in the first place?!”
So I started tutoring to keep other people out of the same aggravating, time-sucking cycle. Since then, I’ve recorded tons of videos and written out cheat-sheet style notes and formula sheets to help every math student—from basic middle school classes to advanced college calculus—figure out what’s going on, understand the important concepts, and pass their classes, once and for all. Interested in getting help? Learn more here: http://www.kristakingmath.com
FACEBOOK // https://www.facebook.com/KristaKingMath
TWITTER // https://twitter.com/KristaKingMath
INSTAGRAM // https://www.instagram.com/kristakingmath/
PINTEREST // https://www.pinterest.com/KristaKingMath/
GOOGLE+ // https://plus.google.com/+Integralcalc/
QUORA // https://www.quora.com/profile/Krista-King
Tagged under: Krista King,reciprocal identities,educational,trigonometry,calculus, ,precalculus,unit circle,trig functions,find ,precalc,undefined
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