Still Confused?

Try reviewing these fundamentals first.

- Home
- Precalculus
- Trigonometry

Still Confused?

Try reviewing these fundamentals first.

Still Confused?

Try reviewing these fundamentals first.

Nope, I got it.

That's that last lesson.

Start now and get better math marks!

Get Started NowStart now and get better math marks!

Get Started NowStart now and get better math marks!

Get Started NowStart now and get better math marks!

Get Started Now- Lesson: 11:37
- Lesson: 21:32

Basic concepts: Use sine ratio to calculate angles and side (Sin = $\frac{o}{h}$ ), Use cosine ratio to calculate angles and side (Cos = $\frac{a}{h}$ ), Use tangent ratio to calculate angles and side (Tan = $\frac{o}{a}$ ), Combination of SohCahToa questions,

Related concepts: Ferris wheel trig problems, Tides and water depth trig problems, Spring (simple harmonic motion) trig problems,

- 1.A ladder is leaning against an outside wall of a building. If the angle of elevation at the base of the ladder to the wall is $65^\circ$ and the ladder is 14 feet long, how far up the wall does the ladder reach?
- 2.A 23 foot long piece of wood is leaning against the wall of a house. If the angle of elevation at the base of the wood to the wall is $75^\circ$, how far is the wood from the base of the wall?

10.

Trigonometry

10.1

Converting between degrees and radians

10.2

Radian measure and arc length

10.3

Angle in standard position

10.4

Coterminal angles

10.5

Reference angle

10.6

Find the exact value of trigonometric ratios

10.7

ASTC rule in trigonometry (All Students Take Calculus)

10.8

Unit circle

10.9

Trigonometric ratios for angles in radians

10.10

Solving first degree trigonometric equations

10.11

Determining non-permissible values for trig expressions

10.12

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

10.13

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

10.14

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

10.15

Combination of SohCahToa questions

10.16

Law of sines

10.17

Law of cosines

10.18

Sine graph: y = sin x

10.19

Cosine graph: y = cos x

10.20

Tangent graph: y = tan x

10.21

Cotangent graph: y = cot x

10.22

Secant graph: y = sec x

10.23

Cosecant graph: y = csc x

10.24

Graphing transformations of trigonometric functions

10.25

Determining trigonometric functions given their graphs

10.26

Quotient identities and reciprocal identities

10.27

Pythagorean identities

10.28

Sum and difference identities

10.29

Double-angle identities

10.30

Word problems relating ladder in trigonometry

10.31

Word problems relating guy wire in trigonometry

10.32

Other word problems relating angles in trigonometry

We have over 830 practice questions in Precalculus for you to master.

Get Started Now10.1

Converting between degrees and radians

10.2

Radian measure and arc length

10.3

Angle in standard position

10.4

Coterminal angles

10.5

Reference angle

10.6

Find the exact value of trigonometric ratios

10.7

ASTC rule in trigonometry (All Students Take Calculus)

10.9

Trigonometric ratios for angles in radians

10.10

Solving first degree trigonometric equations

10.11

Determining non-permissible values for trig expressions

10.12

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

10.13

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

10.14

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

10.15

Combination of SohCahToa questions

10.24

Graphing transformations of trigonometric functions

10.25

Determining trigonometric functions given their graphs

10.26

Quotient identities and reciprocal identities

10.27

Pythagorean identities

10.28

Sum and difference identities

10.29

Double-angle identities

10.30

Word problems relating ladder in trigonometry

10.31

Word problems relating guy wire in trigonometry

10.32

Other word problems relating angles in trigonometry