 Trigonometry

Videos on trigonometry. Watch the "Geometry" playlist first if you have trouble understanding the topics covered here.

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 University Khan Academy Professor Salman Khan Lectures 32 Lectures
 University Khan Academy Professor Salman Khan Lectures 32 Lectures
WATCH NEXT IN TRIGONOMETRY Lecture 1

Basic Trigonometry Lecture 2

Basic Trigonometry II Lecture 3

Radians and degrees Lecture 4

Using Trig Functions Lecture 5

Using Trig Functions Part II Lecture 6

The unit circle definition of trigonometric function Lecture 7

Unit Circle Definition of Trig Functions Lecture 8

Graph of the sine function Lecture 9

Graphs of trig functions Lecture 10

Graphing trig functions Lecture 11

More trig graphs Lecture 12

Determining the equation of a trigonometric function Lecture 13

Trigonometric Identities Lecture 14

Proof; sin(a+b)= (cos a)(sin b) + (sin a)(cos b) Lecture 15

Proof; cos(a+b)= (cos a)(cos b) Lecture 16

Trigonometric identities part 2 Lecture 17

Trigonometric identies part 3 Lecture 18

Trigonometry word problems (part 1) Lecture 19

Trigonometry word problems (part 2) Lecture 20

Law of cosines Lecture 21

Navigation Word Problem Lecture 22

Proof; Law of Sines Lecture 23

Ferris Wheel Trig Problem Lecture 24

Ferris Wheel Trig Problem (part 2) Lecture 25

Fun Trig Problem Lecture 26

Polar Coordinates 1 Lecture 27

Polar Coordinates 2 Lecture 28

Polar Coordinates 3 Lecture 29

Inverse Trig Functions; Arcsin Lecture 30

Inverse Trig Functions; Arctan Lecture 31

Inverse Trig Functions; Arccos Lecture 32

Trigonometry Identity Review Fun