Question
Use the tangent to find the length of side QR. Express your answer to the nearest tenth.
The length of side QR is approximately
units.

Explanation:

Hello! As a friend of mine says:  remember to ask complete and clear questions to obtain good and precise answers to exactly what you want to know.

Since the use of trigonometric ratios to find the lentgth of a side of a triangle is a common exmple in mathematics, and an important skill to develop to do many calculations, I can help you with my own example.

The tangent ratio is defined for a right triangle as:

Then, you need the angle and the length of one of the legs to find the length of the other leg.

Assuming a hypothetical triangle PQR with these features:

You can find the length of side QR in this way:

                ← answer

The result is rounded to the nearest tenth.

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