Trigonometry is an important branch of mathematics that deals with the study of relationships between sides and angles of triangles. It is widely used in various fields including engineering, physics, astronomy, and architecture. In order for students to master trigonometry, they need to have a strong grasp of the concepts involved and a good understanding of how to use calculators to solve problems. Here are some activities that can help students to find trigonometric functions using a calculator.

**1. Introduction to Trigonometry**

The first step towards mastering trigonometry is to introduce students to the basic concepts involved. You can start by giving them an introduction to the three main trigonometric functions; sine, cosine, and tangent. Explain how these functions relate to the angles of a right triangle, and how they can be used to calculate the lengths of the sides.

**2. Use of Scientific Calculator**

After introducing the basics of trigonometry, students need to be familiarized with the scientific calculator. Teach them how to use the calculator to find values of the trigonometric functions for different angles. The students should learn how to switch between radians and degrees on the calculator.

**3. Finding Trigonometric Functions**

Once the students are familiar with the scientific calculator, they can start practicing how to find values of the trigonometric functions. Start by giving them simple problems that involve finding the value of the sine, cosine, or tangent for a given angle. You can gradually increase the difficulty of the problems as the students become more proficient in solving them.

**4. Problem-Solving Activities**

To further build the students’ skills, give them real-life problems that require the use of trigonometry. This could involve problems related to architecture, engineering, surveying, or physics. For example, give them a problem that involves calculating the height of a building based on the length of its shadow and the angle of the sun.

**5. Group Activities**

Group activities are a great way to encourage students to work together and learn from each other. You can divide the class into groups and give each group a set of problems to solve. Each group can then present their solutions to the class, and the class can discuss the different methods used to solve the problems.

In conclusion, mastering trigonometry requires a combination of theoretical understanding and practical application. By using calculators to find trigonometric functions and solving real-life problems, students can gain a better understanding of this important branch of mathematics. These activities will help students to develop their skills and become proficient in using calculators to find trigonometric functions.