Your Account. Basic trig functions - practice problems These problems are designed to help you learn basic trigonometry "trig" functions and how to use your calculator correctly. Try solving these on your own without peaking at the solutions. If you need help, look at the hidden solutions. You may use a calculator.
Trigonometry Games, Activities, Worksheets
Calculus I - Solving Trig Equations
You may have been introduced to Trigonometry in Geometry , when you had to find either a side length or angle measurement of a triangle. Trigonometry is basically the study of triangles , and was first used to help in the computations of astronomy. Today it is used in engineering, architecture, medicine, physics, among other disciplines. With Right Triangle Trigonometry , we use the trig functions on angles , and get a number back that we can use to get a side measurement, as an example. Sometimes we have to work backwards to get the angle measurement back so we have to use what a call an inverse trig function. Note that the second set of three trig functions are just the reciprocals of the first three; this makes it a little easier!
Solving problems using trigonometry
It stated that the ratios of the lengths of two sides of similar right triangles are equal. Therefore, the sets of ratios depend only on the measure of the acute angle, not the size of the triangle. Key Point : Regardless of the size of the triangle, these trigonometric ratios will always hold true for right triangles. Remember the three basic ratios are called Sine , Cosine , and Tangent , and they represent the foundational Trigonometric Ratios , after the Greek word for triangle measurement. And these trigonometric ratios allow us to find missing sides of a right triangle, as well as missing angles.
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