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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?

19.

Trigonometry

19.1

Solving first degree trigonometric equations

19.2

Determining non-permissible values for trig expressions

19.3

Solving second degree trigonometric equations

19.4

Solving expressions using 45-45-90 special right triangles

19.5

Solving expressions using 30-60-90 special right triangles

19.6

Find the exact value of trigonometric ratios

19.7

ASTC rule in trigonometry (All Students Take Calculus)

19.8

Sine graph: y = sin x

19.9

Cosine graph: y = cos x

19.10

Tangent graph: y = tan x

19.11

Cotangent graph: y = cot x

19.12

Secant graph: y = sec x

19.13

Cosecant graph: y = csc x

19.14

Solving trigonometric equations involving multiple angles

19.15

Solving trigonometric equations using pythagorean identities

19.16

Solving trigonometric equations using sum and difference identities

19.17

Solving trigonometric equations using double-angle identities

19.18

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

19.19

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

19.20

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

19.21

Combination of SohCahToa questions

19.22

Pythagorean theorem

19.23

Unit circle

19.24

Sine law

19.25

Cosine law

19.26

Word problems relating ladder in trigonometry

19.27

Word problems relating guy wire in trigonometry

19.28

Other word problems relating angles in trigonometry

We have over 1100 practice questions in Algebra 2 for you to master.

Get Started Now19.1

Solving first degree trigonometric equations

19.2

Determining non-permissible values for trig expressions

19.3

Solving second degree trigonometric equations

19.4

Solving expressions using 45-45-90 special right triangles

19.5

Solving expressions using 30-60-90 special right triangles

19.6

Find the exact value of trigonometric ratios

19.7

ASTC rule in trigonometry (All Students Take Calculus)

19.14

Solving trigonometric equations involving multiple angles

19.15

Solving trigonometric equations using pythagorean identities

19.16

Solving trigonometric equations using sum and difference identities

19.17

Solving trigonometric equations using double-angle identities

19.18

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

19.19

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

19.20

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

19.21

Combination of SohCahToa questions

19.22

Pythagorean theorem

19.26

Word problems relating ladder in trigonometry

19.27

Word problems relating guy wire in trigonometry

19.28

Other word problems relating angles in trigonometry