Trigonometric Functions and Ratios

Front

What is a trigonometric function?

Back

A trigonometric function relates the angles of a triangle to the lengths of its sides. The primary trigonometric functions are sine, cosine, and tangent.

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Front

Define sine in terms of a right triangle.

Back

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Front

Define cosine in terms of a right triangle.

Back

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Front

Define tangent in terms of a right triangle.

Back

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Front

What is the Pythagorean theorem?

Back

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Front

If you know the opposite side and hypotenuse, which trig function should you use?

Back

You should use the sine function.

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Front

If you know the adjacent side and hypotenuse, which trig function should you use?

Back

You should use the cosine function.

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Front

If you know the opposite side and adjacent side, which trig function should you use?

Back

You should use the tangent function.

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Front

What is the relationship between sine and cosine?

Back

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Front

How do you find the length of a side using trigonometric ratios?

Back

Use the appropriate trigonometric function based on the known sides and the angle, then rearrange the formula to solve for the unknown side.

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