What’s on the Sine and Cosine Rules poster
The rule, 4 worked examples.
- The sine rule pairs a side with its opposite angle. The cosine rule handles the cases…
- a/sinA = b/sinB · c² = a² + b² − 2ab·cosC
- Two angles and any side = sine rule
- Two sides and a non-included angle = sine rule
- Two sides and the angle between = cosine rule
- All three sides, want an angle = cosine rule
If the triangle has a right angle, use SOH-CAH-TOA instead. It is far quicker.
Questions about the Sine and Cosine Rules poster
- What’s on the Sine and Cosine Rules poster?
- The rule, 4 worked examples. The sine rule pairs a side with its opposite angle. The cosine rule handles the cases…; a/sinA = b/sinB · c² = a² + b² − 2ab·cosC; Two angles and any side = sine rule; Two sides and a non-included angle = sine rule; Two sides and the angle between = cosine rule; All three sides, want an angle = cosine rule. If the triangle has a right angle, use SOH-CAH-TOA instead. It is far quicker.
- Who is the Sine and Cosine Rules poster for?
- Sine and Cosine Rules is filed under 10th Grade (ages 15–16), so it matches what that year asks a child to remember. It is equally useful to an older student revisiting math, and to the parent or teacher answering the question at the kitchen table.
- When should you use the Sine and Cosine Rules poster?
- Count what you are given. That decides which rule applies. A wall chart earns its place by being glanceable from where the work is happening, so Sine and Cosine Rules belongs on the wall where that math work actually happens, within glancing distance, rather than filed away.
- What other posters go with Sine and Cosine Rules?
- Sequences and Series, Circle Theorems and Completing the Square sit alongside Sine and Cosine Rules in the 10th Grade set. Printed together they make a wall rather than a single sheet, which is how a reference set actually gets used.Sequences and SeriesCircle TheoremsCompleting the Square
- Is the Sine and Cosine Rules poster free to download and print?
- Yes. Sine and Cosine Rules downloads as a free PDF with no account, no email and no watermark, like everything else in the 10th Grade set. Print as many copies as you like for a home, a classroom, a library or a tutoring group; reselling the file is the only thing the licence rules out.Read the licence
- What size does the Sine and Cosine Rules poster print at?
- Sine and Cosine Rules is a vector PDF laid out for US Letter, and prints on A4 with Fit to page — the same file, no separate download. Because every mark on it is drawn rather than photographed, it stays sharp enlarged to A3, A2 or A1 at a copy shop. Colour carries emphasis only, so a greyscale print of Sine and Cosine Rules loses nothing.Printing guide
Related posters
Charts that sit alongside Sine and Cosine Rules on the same wall.
Browse every 10th Grade poster, or start from the full catalogue.