Right Triangle Trigonometry 30 60 90
To double check the answer use the pythagorean thereom.
Right triangle trigonometry 30 60 90. The height of the triangle is the longer leg of the 30 60 90 triangle. If the hypotenuse is 8 the longer leg is. We will prove that below. Two of the most common right triangles are 30 60 90 and the 45 45 90 degree triangles all 30 60 90 triangles have sides with the same basic ratio if you look at the 30 60 90 degree triangle in radians it translates to the following.
A 30 60 90 triangle is a special right triangle a right triangle being any triangle that contains a 90 degree angle that always has degree angles of 30 degrees 60 degrees and 90 degrees. There are two special triangles in trigonometry. Thus in this type of triangle if the length of one side and the side s corresponding angle is known the length of the other sides can be determined using the above ratio. Magical but just a smidgeon more work to do.
Because it is a special triangle it also has side length values which are always in a consistent relationship with one another. In this type of right triangle the sides corresponding to the angles 30 60 90 follow a ratio of 1 3 2. The altitude of an equilateral triangle splits it into two 30 60 90 triangles. 30 60 90 triangle rules and properties.
The most important rule to remember is that this special right triangle has one right angle and its sides are in an easy to remember consistent relationship with one another the ratio is a. The sides of a 30 60 90 right triangle lie in the ratio 1 3 2. In a 30 60 90 triangle the sides are in the ratio 1. Not one of those is a right triangle but if we cut them in half they will be.
Memorizing and understanding your 30 60 90 triangles will also allow you to solve many trigonometry problems without the need for a calculator or needing to approximate your answers in decimal form. The hypotenuse is the longest side in a right triangle which is different from the long leg. The long leg is the leg opposite the 60 degree angle. The other is the isosceles right triangle.
Like the gandalf triangle knowing any side length of the triforce triangle which has angles of 30 60 and 90 can tell us the other sides. A 30 60 90 triangle has fairly simple sines cosines and tangents for each angle and these measurements will always be consistent. A 30 60 90 right triangle is a special right triangle in which one angle measures 30 degrees and the other 60 degrees. They are special because with simple geometry we can know the ratios of their sides.