- Sohcahtoa: Sine, Cosine, Tangent - Math is Fun
Sohca what? Just an easy way to remember how sine, cosine and tangent work: OK, let's see what this is all about
- Finding an Angle in a Right Angled Triangle - Math is Fun
We can find an unknown angle in a right-angled triangle, as long as we know the lengths of two of its sides The ladder leans against a wall as shown
- Finding a Side in a Right-Angled Triangle - Math is Fun
We can find an unknown side in a right-angled triangle when we know: one length, and one angle (apart from the right angle)
- Scientific Calculator - Math is Fun
This is a very powerful Scientific Calculator You can use it like a normal calculator, or you can type formulas like (3+72)2 It has many
- Parallel Lines, and Pairs of Angles - Math is Fun
Lines are parallel if they are always the same distance apart (called equidistant), and will never meet Just remember:
- Play Tic-Tac-Toe - Math is Fun
Play Tic-Tac-Toe Play Tic-Tac-Toe against another player or the computer Different board sizes and computer strength
- Interactive Unit Circle - Math is Fun
Sine, Cosine and Tangent in a Circle or on a Graph Sine, Cosine and Tangent (often shortened to sin, cos and tan) are each a ratio of sides of a right angled triangle
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