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 Precalculus
 Trigonometry
Cotangent graph: y = cot x
Try reviewing these fundamentals first
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Review these basic concepts…
Use tangent ratio to calculate angles and side (Tan = $\frac{o}{a}$ )
Radian measure and arc length
Converting between degrees and radians
Tangent graph: y = tan x
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Get Started NowChapter 9.21 Playlist
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Chapter 9 Topics:

9.1
Converting between degrees and radians

9.2
Radian measure and arc length

9.3
Angle in standard position

9.4
Coterminal angles

9.5
Reference angle

9.6
Find the exact value of trigonometric ratios

9.7
ASTC rule in trigonometry (All Students Take Calculus)

9.8
Unit circle

9.9
Trigonometric ratios for angles in radians

9.10
Solving first degree trigonometric equations

9.11
Determining nonpermissible values for trig expressions

9.12
Use sine ratio to calculate angles and side (Sin = $\frac{o}{h}$ )

9.13
Use cosine ratio to calculate angles and side (Cos = $\frac{a}{h}$ )

9.14
Use tangent ratio to calculate angles and side (Tan = $\frac{o}{a}$ )

9.15
Combination of SohCahToa questions

9.16
Law of sines

9.17
Law of cosines

9.18
Sine graph: y = sin x

9.19
Cosine graph: y = cos x

9.20
Tangent graph: y = tan x

9.21
Cotangent graph: y = cot x

9.22
Secant graph: y = sec x

9.23
Cosecant graph: y = csc x

9.24
Graphing transformations of trigonometric functions

9.25
Determining trigonometric functions given their graphs

9.26
Quotient identities and reciprocal identities

9.27
Pythagorean identities

9.28
Sum and difference identities

9.29
Doubleangle identities

9.30
Word problems relating ladder in trigonometry

9.31
Word problems relating guy wire in trigonometry

9.32
Other word problems relating angles in trigonometry
Don't just watch, practice makes perfect.
Do better in math today
Chapter 9 Topics:

9.1
Converting between degrees and radians

9.2
Radian measure and arc length

9.3
Angle in standard position

9.4
Coterminal angles

9.5
Reference angle

9.6
Find the exact value of trigonometric ratios

9.7
ASTC rule in trigonometry (All Students Take Calculus)

9.8
Unit circle

9.9
Trigonometric ratios for angles in radians

9.10
Solving first degree trigonometric equations

9.11
Determining nonpermissible values for trig expressions

9.12
Use sine ratio to calculate angles and side (Sin = $\frac{o}{h}$ )

9.13
Use cosine ratio to calculate angles and side (Cos = $\frac{a}{h}$ )

9.14
Use tangent ratio to calculate angles and side (Tan = $\frac{o}{a}$ )

9.15
Combination of SohCahToa questions

9.16
Law of sines

9.17
Law of cosines

9.18
Sine graph: y = sin x

9.19
Cosine graph: y = cos x

9.20
Tangent graph: y = tan x

9.21
Cotangent graph: y = cot x

9.22
Secant graph: y = sec x

9.23
Cosecant graph: y = csc x

9.24
Graphing transformations of trigonometric functions

9.25
Determining trigonometric functions given their graphs

9.26
Quotient identities and reciprocal identities

9.27
Pythagorean identities

9.28
Sum and difference identities

9.29
Doubleangle identities

9.30
Word problems relating ladder in trigonometry

9.31
Word problems relating guy wire in trigonometry

9.32
Other word problems relating angles in trigonometry
Don't just watch, practice makes perfect.
Cotangent graph: y = cot x
Lessons

a)
$y = \cot x$

Cotangent graph: y = cot x
Don't just watch, practice makes perfect.
We have 828 practice questions in Precalculus for you to work through.