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The Complete Idiot's Guide to Trigonometry by Izolda Fotiyeva, Dmitriy Fotiyev

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The Tangent Ratio

In the following figure, you can measure the distance BC on the beach. Can trigonometry help us to figure out what the measure of AC is?

40-1.png

The answer is simple if acuteangle.pngABC is one of the special right triangles that we discussed in Chapter 2. Knowing the length of BC and ac.pngB, you can easily calculate the distance to the ship (AC). The next figure shows these triangles and the relations among the measures of their sides. We studied these relationships ...

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