Evaluate for sine cosine and tangent using reference angles

👉 Learn how to find the reference angle of a given angle. The reference angle is the acute angle formed by the terminal side of an angle and the x-axis. To find the reference angle, we determine the quadrant on which the given angle lies and use the reference angle formula for the quadrant to find the required reference angle.

Organized Videos:
✅ Angles in Trigonometry
✅ Solve Problems with Arc Length
✅ Angles in Trigonometry | Learn about
✅ Sketch Angles in Standard Position
✅ Find the Quadrant of the Angle
✅ Find the Reference Angle
✅ Complement and Supplement of an Angle
✅ Convert Radians to Degrees
✅ Convert Degrees to Radians
✅ Convert Degrees to Degree Minute Seconds
✅ Convert Degree Minute Seconds to Degrees
✅ Coterminal Angles | Learn About
✅ Find Coterminal Angles | 0 and 2pi
✅ Find Coterminal Angles | 0 and 360

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#trigonometry #brianmclogan

[kylegorny]

Thank you so much for making all of these videos I'm taking Pre-Cal right now and honestly your videos are the reason why I have an A in the class and don't get super lost in the sauce. Thanks again you're the best!!

[masawarelahi]

Took 4 minutes to explain what my teacher couldn't in 3 hours

[parkerscurria]

Thank you so much for EVERY SINGLE video you have made. You have helped me so much in my trig college course and I can't thank you enough. I wish I had you as a teacher!!

[bluereino]

I am having to search online for help because I have one of those math teachers who give you notes on one thing and not everything and when you get to the homework the problems are different or different types. It is really frustrating and wastes so much time that I could've spent doing other homework.

[joshhansen]

I totally didn't understand this concept at all until this video. Bravo!

[laurag]

Lovely! My teacher didn't go over this part of our homework during our note session, but you helped me out big time! Thanks!

[autumnwilomovsky]

You fucking rock, dude! Taking precal this semester and every time i have a doubt, i come to your channel and you set my mind at ease. Also, you sound so much nicer when teenagers aren't around lmao.

[pabloperro]

Thank you for these videos man you are helping me get through my pre calc class you are awesome

[elifmutafoglu]

If my college had you as a professor i would just wait to add your class do you see how rare is this for a college student

[jannatulnyeemratul]

Sir, Why is sin of the reference angle equal to sin of the original angle?I would be very grateful if you answer sir.

[casypp]

Wait how did you find the coordinates at first? That’s the main problem i have that I cannot find the coordinates of x and y plz explain

[eslamkagigi]

Thank u so much best explanation
Do u have any other videos to help alevel students with Maths ???

[husky]

just use the original degree to see which quadrant it sits and the signs. for example cos200, its located third quadrant which sin -, cos - and tan +. so we know the sign and then just do the rest

[Joshua-wglt]

what class are you teaching this to? I'm feeling anxiety about a class I'm going into and I want to know if I need to know this method well

[stephaniev]

How are you finding or how would i know that 60 degrees (x, y) = (1/2, pi*/2 ) how do you find the x and y ? Do you have a video on explaining that ? Thank you !! I passed my last exam cause of you (log test)

[mewpaa]

THANK YOU SO MUCH!!! i actually feel some what smart now hahaha, wish my school taught it this way!!!!

[martinromero]

Is it possible to find the cos and sin using just an angle? Example 46 degrees

[mandzgibz]

why are the coordinates in between quadrant 1: 1/2 and square root of 3/2? forgive me. I'm still new at this.

[sonofjesus]

I am having such a hard time, actually the hardest in my entire algebra history trying to find what the radian measures o all angles who's sine is -0.9 using the calculate and then the unit circle. The unit circle is crazy difficult but I have to find why the radian measures are -1.12 + 2(pi)n and 4.26 + 2(pi)n. I HATE NOT GETTING HOW TO DO THIS o:;;;

[randydiebold]

this tells me nothing.. if i have and angle 23 degrees how do I evaluate for sine. show that. not for angles that we are supposed to memorize.