Trigonometric Ratios

This basic trigonometry video tutorial provides an introduction into trigonometric ratios as it relates to a course in geometry. It explains how to calculate the sin, cos, and tan ratio of a right triangle given the 3 sides. You can use the pythagorean theorem to find the value of the missing side. In addition, it explains how to evaluate trigonometric functions using right triangle trigonometry and special right triangles such as the 30 60 90 triangle or the 45 45 90 triangle. This video contains plenty of examples and practice problems including find missing angles as well as missing sides.

Polygons:

Quadrilaterals:

Points, Lines, Planes, & Segments:

Similar Triangles:

Pythagorean Theorem:

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The Distance Formula:

Distance Between 2 Points - 3D:

Special Right Triangles - 30 60 90:

Special Right Triangles - 45 45 90:

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Angle of Elevation Word Problems:

Finding The Missing Side of a triangle:

Finding The Missing Angle of a Triangle:

Two Triangle Trigonometry Problems:

How To Find The Area of a Rectangle:

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Final Exams and Video Playlists:

Full-Length Videos and Worksheets:

Trigonometry Formula Sheet:

[qnesia]

I have a quiz in an hour or two, and I've been tryin' to self-understand this topic for three days. My learning materials and textbooks are so confusing. Thank you!

[jewelmelville]

god bless you. lmaoooo no seriously. im having a hard time with online school and maths and cause of you ive been improving overall, thanks sm

[xAstr-]

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[穎-bb]

this helped me a lot omg thank you🥰❤️ i’m sitting for an mathematics paper in 8 hours

[kiazu]

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[yaboiravoli]

im watching this while Answering my exam, my Teacher haven't Caught me yet.

(edit): yeah about that exam i don't know if i passed it or not, but im sure i did... maybe...

[mirage]

I'm actually learning something math related :0

*Thank* *you* *very* much :)

[NicoleTopics]

Omg I'm an idiot lol. Thanks for making this vid, I understand what I'm learning 100x better than what my online lesson from my school provided lmao

[mic]

me at school at school:
confused --- what am i seeing
watching this video:
omg i understand this

[descriptiongang]

Bro came in clutch with rationalizing
You made it so easy to understand ❤

[ifeanyiabaraoha]

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[georgesadler]

MR. Organic Chemistry Tutor, thank you for another well-organized video/lecture on Trigonometric Ratios in Analytic/Plane Geometry. This topic is easy to understand from start to finish. All students should realize that Trigonometric functions are built off Ratios and the Unit Circle.

[kashmirdayz]

We can also use the trick :
Some (sin) curly (cos) to(tan)
People(per) black(base) prsnt(per)
Have (hypo) hair(hypo) beauty(base
I.e some people have curly black hair to present beauty...
Where per is perpendicular
Hypo is hypotenuse...

[amberb]

i have a test tmr and i genuinely know NOTHING, i understand this and the way you teach so i’ll come back tmr and lyk if i passed..

[munshidap]

well explained....remembering the good old classes.. through ur class....thank u so much...

[sheen]

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[finnallen]

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[DeNollie]

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[smolleaf]

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[AkinashSahani]

SOH CAH TOA really helped me to remember this. Tysm 😂