Q:
# What Are the Rules for a Special Right Triangle?

The rules of a special right triangle concern the angles of the triangle. A special right triangle is one with the angles 30, 60 and 90 degrees. A right triangle with the angles 45, 45 and 90 degrees is another special triangle.

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The special right triangle finds application in trigonometry. It becomes easier to calculate the values of trigonometric functions when a right triangle has these angles. The six trigonometric functions are sine, cosine, tangent, cosecant, secant and cotangent.

The values of trigonometric functions depend on the values of the angles other than the right angle. The ratios of the lengths of the sides of the right triangle give these six trigonometric functions.

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Q:
## What Are the 30-60-90 Triangle Rules?

A: A 30-60-90 triangle has interior angles equal to 30, 60 and 90 degrees. This is always a right triangle with the 90-degree angle located opposite the longe... Full Answer >Filed Under: -
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## What Are Examples of Vertical Angles in Real Life?

A: Examples of vertical angles in real life settings include the black and white railroad crossing signs found on roadways near railroads, open scissors and t... Full Answer >Filed Under: -
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## Does a Parallelogram Have a Right Angle?

A: Some parallelograms, such as rectangles and squares, contain right angles. Another type of parallelogram, known as a rhombus, may or may not contain right ... Full Answer >Filed Under: -
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## What Are Two Angles With a Common Side and No Interior Points Called?

A: Two angles that share a common side and a common vertex, but have no common interior points are called adjacent angles, often abbreviated as "adj." Adjacen... Full Answer >Filed Under: