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Use sine ratio to calculate angles and sides (Sin = ho )
- Intro Lesson13:03
- Lesson: 13:13
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- Lesson: 3a4:42
- Lesson: 3b3:27
- Lesson: 3c2:40
- Lesson: 42:16
- Lesson: 4a1:52
Use sine ratio to calculate angles and sides (Sin = ho )
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.
Lessons
- IntroductionWhat are sine, cosine and tangent?
- 1.Determine each sine ratio using a calculatora)sin60∘b)sin−60∘
- 2.Determine the angle to the nearest degree using a calculatora)sinθ=0.57b)sinθ=−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)sinθ=135
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25.
Introduction to Trigonometry
25.1
Use sine ratio to calculate angles and sides (Sin = ho )
25.2
Use cosine ratio to calculate angles and sides (Cos = ha )
25.3
Use tangent ratio to calculate angles and sides (Tan = ao )
25.4
Combination of SohCahToa questions
25.5
Solving expressions using 45-45-90 special right triangles
25.6
Solving expressions using 30-60-90 special right triangles
25.7
Word problems relating ladder in trigonometry
25.8
Word problems relating guy wire in trigonometry
25.9
Other word problems relating angles in trigonometry
Don't just watch, practice makes perfect
Use sine ratio to calculate angles and sides (Sin = ho )
Don't just watch, practice makes perfect.
We have plenty of practice questions in Transition Year Maths for you to master.
Get Started NowPractice topics for Introduction to Trigonometry
25.1
Use sine ratio to calculate angles and sides (Sin = ho )
25.2
Use cosine ratio to calculate angles and sides (Cos = ha )
25.3
Use tangent ratio to calculate angles and sides (Tan = ao )
25.4
Combination of SohCahToa questions
25.5
Solving expressions using 45-45-90 special right triangles
25.6
Solving expressions using 30-60-90 special right triangles
25.7
Word problems relating ladder in trigonometry
25.8
Word problems relating guy wire in trigonometry
25.9
Other word problems relating angles in trigonometry