Trigonometry

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This video tutorial provides a basic intro into trigonometry. It explains how to evaluate trigonometric functions like sin, cos, and tan using soh cah toa and right triangle trigonometry. It explains how to use reference angles and coterminal angles to evaluate trig functions such as sec, csc, and cot.

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darrylkid

"hm, i almost lost my train of thought there"
A great reminder you're also human and not some super smart math android with a cool voice, haha. Thanks so much for taking the time to make these videos!

missasyan

6:06 Special right angle triangles
17:10 Exact values
22:15 Exact values of angles greater than 90
32:40 Exact values of angles greater than 90 negative example

Jellyfishgift

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marcus_

This helped so much. You're the reason why I'm actually getting As and loving physics even more. Thank you

juliemkpandiok

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GrotesqueDeth

I know I'm late, but you are my trig savior. Watching this playlist brought my grade up 2 letter grades, and I seriously can't thank you enough

shay

MR. Organic Chemistry Tutor, thank you for a solid introduction to Trigonometry. This is a beautiful start to old fashion mathematics.

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simplekanal

For the basic values of theta for sin cos tan (0, 30, 45, 60, 90) you can use the trig hand trick

Face your palm toward you and label your pinky (0°) and move up with the other basic values.
To find sin(30°) count the number of fingers below whatever finger is labelled for 30°(ring), so there is one finger below your ring finger(pinky)

For sin:
Sqroot of number of fingers below/2

For cos vice versa:
Sqroot of number of fingers above/2

For tan flip your hand over so your nails face you(your pinky is still 0 but it’s counting down now):

Sqroot of the number of fingers above/number of fingers below

👍

RithwinSK

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maheshguragai

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