cheat sheet for intro to right angle trig

The trigonometric table might seem complex at first, but it can be learned easily by only the values of sine for the 8 standard angles. This is due to the change in the quadrant. There is a sign change in the values in various places under 180°, 270°, etc for values of some trig ratios in a trigonometric table.

The reason for this is that while computing the values, a '0' appears in their denominator, so the value becomes undefined and is said to be equivalent to infinity. The value for some ratios in a trig table is given as ∞ or 'not defined'.The values for complementary angles present like 30° and 60° in a trigonometric values table can be computed using complementary formulas for the various trigonometric ratios.It is best to remember the values of the trigonometric ratios of these standard angles.Ī few key points that can be noted in the trigonometric table are,

In short, these ratios are written as sin, cos, tan, cosec, sec, and cot. The table consists of trigonometric ratios – sine, cosine, tangent, cosecant, secant, and cotangent.

It is easy to predict the values of the trig ratios in a trigonometric table and to use the table as a reference to calculate trigonometric values for various other angles, due to the patterns existing within trigonometric ratios and even between angles. The trigonometric table is simply a collection of values of trigonometric functions of various standard angles including 0°, 30°, 45°, 60°, 90°, along with with other angles like 180°, 270°, and 360° included, in a tabular format. Note: Here, 1/√2 can also be written as √2/2 and 1/√3 can also be written as √3/3 (by rationalizing the denominators). Here is the trigonometry table for standard angles along with some non-standard angles: Trigonometry Table The trigonometric functions are namely the sine function, cosine function, tan function, cot function, sec function, and cosec function. Because of patterns existing within trigonometric ratios and even between angles, it is easy to both predict the values of the trigonometry table and use the table as a reference to calculate trigonometric values for various other angles. The trigonometric table is simply a collection of the values of trigonometric ratios for various standard angles including 0°, 30°, 45°, 60°, 90°, sometimes with other angles like 180°, 270°, and 360° included, in a tabular format.

Cheat sheet for intro to right angle trig