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Get Started Now- Intro Lesson13:03
- Lesson: 12:53
- Lesson: 23:21
- Lesson: 3a2:57
- Lesson: 3b1:32
- Lesson: 3c1:09
- Lesson: 4a1:52

One of the trigonometric ratios is sine ratio. It is the opposite side over the hypotenuse of right triangles. In other words, we can find the angles and sides of right-angled triangles by using the sine ratios.

- IntroductionWhat are sine, cosine and tangent?
- 1.Determine each sine ratio using calculatora)$\sin 60^\circ$b)$\sin-60^\circ$
- 2.Determine the angle to the nearest degreea)$\sin \theta =0.57$b)$\sin \theta = -0.65$
- 3.Determine the angles and sides using Sine ratioa)Find angle A and B:

b)Find the value of "x" using sine

c)Find the value of "x" using sine

- 4.Draw and label a right triangle to illustrate sine ratio, then calculate the angle.a)$\sin \theta = {5 \over 13}$

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