Presentation on theme: "TRIGONOMETRIC RATIOS Chapter 9.5. New Vocabulary Trigonometric Ratio: The ratio of the lengths of two sides or a right triangle. The three basic trigonometric."— Presentation transcript:
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Using a Calculator to Find Trigonometric Ratios for Specific Angles You can find the trigonometric ratios for specific angles using a calculator… Step 1: Make sure your calculator is in DEGREES!!! Go to MODE, and select degrees if necessary. Step 2: Select the button for the trig. function you would like to use. Step 3: Type the angle measure into the parenthesis. Step 4: Close parenthesis and press enter! Step 5: Round the answer to the desired number of decimal places.
Using a Calculator to Find Trigonometric Ratios for Specific Angles ROUND ANSWERS to four decimal places! Example 1: What is the sine of 25 degrees? Example 2: What is the tangent of 18 degrees? Example 3: What is the cosine of 49 degrees?