Trigonometric Identities to Evaluate Expressions - Part 2 of 2 (Half Angle Identity)

Here I find the value of cos(pi/12) using a half angle identity as well as work one extra example using a half angle identity.

[chessjess]

last semester I transferred into my dream school and I have to say I would have never made it here without you. thank you.

[DoingTheDaily]

every time there is a topic I don't understand I search up your name first... you have done wonders for me. thank you, more teachers should be like you.

[astraightcriminal]

I would just like to say, you're the reason I got an A last semester. You could charge for what you're showing us on here but you don't. Thank you. So. Much.

[yrsofgreatness]

I could have used this vid 2 months ago! arrrhghghg!

[deep]

sir is there any playlist for all trigonometry Videos.
its very difficult to search in all videos.

[TheTrumpBoy]

Patrick, I've been wondering for a long time now, What's with the naked mannequin??!

[zensx]

Patrick, according to my textbook, the solution for #2 "rad2+rad3 / 2" can be simplified into rad2 + rad6 / 4

can you explain why?

[YouLovesChloe]

I'm so lost on how do you know which identity to use when given a problem