Trigonometric Functions on a Graphing Calculator

This video tutorial demonstrates how to find trigonometric function values using a graphing calculator, specifically focusing on the TI-84 model. It covers setting the calculator to degree mode, calculating sine, cosine, and tangent values, and handling reciprocal functions like secant and cosecant. The tutorial emphasizes the importance of understanding trigonometric relationships and provides step-by-step instructions for each calculation. The video concludes with a brief mention of inverse trigonometric functions, which will be covered in a subsequent video.

What is the primary function of a graphing calculator as discussed in the video?

• To perform statistical analysis

• To graph linear functions

• To find trigonometric function values

• To solve algebraic equations

Which mode should the calculator be set to for the examples in the video?

• Graphing mode

• Radian mode

• Degree mode

• Scientific mode

What is the decimal approximation of the sine of 30 degrees?

• 0.707

• 1.0

• 0.5

• 0.866

How is the secant of an angle calculated using a graphing calculator?

• By dividing 1 by the cosine of the angle

• By using the tangent key

• By using the secant key

• By multiplying the sine and cosine of the angle

What is the approximate value of the secant of 102.5 degrees?

• 2.0

• 1.732

• -4.6202

• 0.5

Which key should not be used for negative angles to avoid errors?

• Multiplication key

• Addition key

• Negative key

• Minus key

How can the cosecant of an angle be found on a calculator?

• By using the tangent key

• By using the cosecant key

• By dividing 1 by the sine of the angle

• By multiplying the sine and cosine of the angle

What is the reciprocal of the sine function called?

• Secant

• Cosecant

• Tangent

• Cotangent

What future topic is mentioned at the end of the video?

• Graphing linear functions

• Inverse trigonometric functions

• Solving quadratic equations

• Performing statistical analysis

What is the inverse cosine function also known as?

• Arc secant

• Arc cosine

• Arc tangent

• Arc sine