PrecalcCast: Sum and Difference Formula for Tangent

[danagamer]

nose whistle



[famousmanbearpig]

during lecture hours, i just tune in to ur channel instead of my teacher

[HazelnutFrappe]

OMG!! Thanks so much for this video, I actually made a dumb mistake with the tangent formula, I like how you teach and talk slowly... it makes it a lot more understandable!

[tommy6564]

my teacher is so incompetent

[colombean84]

OMG thaaaaaank you! write a textbook, I'll buy it...

[iamargenn]

thanks! this really helped!:)))

[00tweaker00]

Thanks!!!



[nenadpocev]

thank you for the video...it helped me a lot...thanks again

[lilrp76]

I could do this when I'm stoned go back and get your masters

[t3ll3z209]

thanks really helped