Evaluating Compositions of Trig Functions

This video goes through 2 examples of evaluating compositions of trig functions without the use of a calculator.

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[someasiankid]

THIS MADE IT SO SIMPLE! I was watching videos with some crazy stuff that I didn't understand

[cassandrakehs]

this was so so helpful to me! you explained this so well! thank you so much!!

[experiencethebeats]

Thank you! Greatly appreciate your videos.

[dougjenkins]

Very helpful video for evaluating trig functions. Thank you.

[Kjg]

Love this explanation, sending to some of my students who need extra examples, but PLEASE have an angle with your trig functions when writing the final answers. It should say cosine of theta = ; a trig function cannot exist without an angle, and this depends on the angle you assigned to the inverse at the beginning. Thanks for the video!

[hobbiesandmore]

This helped me understand the reference triangle. Thank you!

[HOTMiSCHiEF]

Excellent! Now I want more examples :)

[KisemboPhysicsAndMath]

I'm inspired to start calculus videos soon.... Great work you're doing.

[artle]

Thank you so much, if I could donate I would! I have a fine math teacher, but her accent is really heavy and she moves really fast and I'm too timid to ask her to explain more. Your explanation was great, thank you so much!

[vishalmishra]

Lot of videos on easy problems. Why no video on hard problems - e.g. how to calculate sin π/17 ?

[garyward]

If you rewrote both of them as, example for 2nd, cot(arcsin(2/5))=sqrt21/2 instead of cos = sqrt21/2, it would look better and possibly more clear.