Use sine ratio to calculate angles and sides (Sin = o / h)

All You Need in One Place

Everything you need for better marks in primary, GCSE, and A-level classes.

Learn with Confidence

We’ve mastered the UK’s national curriculum so you can study with confidence.

Instant and Unlimited Help

24/7 access to the best tips, walkthroughs, and practice questions.

0/1
?
Intros
Lessons
  1. What are sine, cosine and tangent?
0/7
?
Examples
Lessons
  1. Determine each sine ratio using a calculator
    1. sin⁡60∘\sin 60^\circ
    2. sin⁡−60∘\sin-60^\circ
  2. Determine the angle to the nearest degree using a calculator
    1. sin⁡θ=0.57\sin \theta =0.57
    2. sin⁡θ=−0.65\sin \theta = -0.65
  3. Determine the angles and sides using Sine ratio
    1. Find angle A and B:

      Use sine ratio to find angles in a triangle
    2. Find the value of "x" using sine

      Use sine ratio, opposite side length to calculate hypotenuse
    3. Find the value of "x" using sine

      Use sine ratio, hypotenuse and angle to calculate opposite side length
  4. Draw and label a right triangle to illustrate sine ratio, then calculate the angle.
    1. sin⁡θ=513\sin \theta = {5 \over 13}
Free to Join!
StudyPug is a learning help platform covering math and science from grade 4 all the way to second year university. Our video tutorials, unlimited practice problems, and step-by-step explanations provide you or your child with all the help you need to master concepts. On top of that, it's fun - with achievements, customizable avatars, and awards to keep you motivated.
  • Easily See Your Progress

    We track the progress you've made on a topic so you know what you've done. From the course view you can easily see what topics have what and the progress you've made on them. Fill the rings to completely master that section or mouse over the icon to see more details.
  • Make Use of Our Learning Aids

    Last Viewed
    Practice Accuracy
    Suggested Tasks

    Get quick access to the topic you're currently learning.

    See how well your practice sessions are going over time.

    Stay on track with our daily recommendations.

  • Earn Achievements as You Learn

    Make the most of your time as you use StudyPug to help you achieve your goals. Earn fun little badges the more you watch, practice, and use our service.
  • Create and Customize Your Avatar

    Play with our fun little avatar builder to create and customize your own avatar on StudyPug. Choose your face, eye colour, hair colour and style, and background. Unlock more options the more you use StudyPug.
Topic Notes
?
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.