These worksheets teach students how to use a calculator to determine sine, cosine, tangents, etc.

When we are working with right triangles, we often need to use the three main functions of trigonometry to determine the length of the hypotenuse, adjacent, and opposite sides. The sin function of an angle is the value of the opposite angle divided by the hypotenuse. The cos function of an angle is the value of the adjacent angle divided by the hypotenuse. The tan function of an angle is the value of the adjacent angle divided by the opposite angle. The lengths will always come out in decimal form.

How do you compute trigonometric functions? Trigonometry is a branch of mathematics. It studies the right-angled triangles. As the name of these triangles suggests, one side of these triangles is straight of 90 °. Trigonometry helps us to find out unknown sides of these triangles. These are the simplest ways to compute trigonometric functions by understanding 'sine,' 'cosines,' and 'tangent.' These are the basic functions of trigonometry and can easily be computed. These functions are at each side of the right-angled triangle. For starters, this can appear tricky. Come up with a mnemonic to help you memorize these! Formulas - By using simple formulas, we can quickly solve trigonometric equations. Trigonometry has unique formulas to help us compute unknown sides or angles, for example, 'the circumference of circle' or 'area of a circle,' etc. Pythagoras theorem - Pythagoras theorem is the easiest way to solve the right-angled triangle. It is an important rule that says square on the hypotenuse is equal to the sum of the squares on both sides. This rule makes it easy for us to find out one side if we know the other two sides and any internal angle. Your students will use these worksheets to learn how to use a calculator in order to determine the sine, cosine, tangent, etc. of specified degrees of angle. All answers should be rounded.

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Print Using a Calculator (sin, cos, and tan) Worksheets

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Using a Calculator With Trigonometric Functions Lesson

This worksheet explains how to use a calculator to find the sin, cosine, or tan. A sample problem is solved, and two practice questions are provided.


We get up close and personal with this skill and work away with our little math machines. Ten questions are provided.


Students will use a calculator to find the unknown values. Ten questions are provided.

Review and Practice

This worksheet reviews how to compute this value. This will lead us up to learning the purpose of this entire process. Six practice questions are provided.


Students will demonstrate their proficiency in using a calculator with trigonometric functions. Ten problems are provided.

Skills Check

Students will find the distance or the slope. Space is included for students to copy the correct answer when given.