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In these lessons, we will learn how to use a calculator to find the trigonometric value of an angle.

Related Topics: More Lessons on Trigonometry

We could make use of a scientific calculator to obtain the trigonometric value of an angle.

* Example: *

Find the value of cos 6.35˚.

* Solution: *

Press

cos 6.35˚ = 0.9939 (correct to 4 decimal places)*Example: *

Find the value of sin 40˚ 32 ’ .

* Solution: *

Press

sin 40˚32 ’ = 0.6499 (correct to 4 decimal places)

*Example: *

Find the value of x for the following triangle. (Give your answer correct to 4 decimal places)

* Solution: *

* x* = 6.21 × sin 31.3˚ = 3.2262

Determining Trigonometric Function Values on the Calculator

Using the TI 84 to find function values for sine, cosine, tangent, cosecant, secant, and cotangent.

This video goes over how to use your calculator to solve trigonometry. Making sure your in the right mode and entering things in the right order depend on which of the 2 types of calculators you have. This video goes over how to solve with both.

Finding trig ratios and angles using your calculator.

The following video shows how to use a calculator to obtain the trigonometric value of an angle.

You can use the Mathway widget below to practice Trigonometry or other math topics. Try the given examples, or type in your own problem. Then click "Answer" to check your answer.