Mathematics, 02.07.2020 14:01, kratose
Angelica says the tangent is the ratio of the length of the leg opposite ZA over the length of the leg
adjacent to ZA. This means BC must have a length of 3 units and AC must have a length of 4 units. They
can find the length of AB using the Pythagorean Theorem and then use it to find the sine and cosine ratios.
Graciella says that they cannot find the length of any side of the triangle and, therefore, cannot find the
ratios for sine and cosine.
Both students have errors in their reasoning.
1. Identify the mistake Angelica made in her reasoning. Provide an example that shows why she is
incorrect.
2. Identify the mistake that Graciella made in her reasoning. Explain why she is incorrect.
3. Find the ratios for the sine and cosine of ZA. Explain your process.
Answers: 2
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Angelica says the tangent is the ratio of the length of the leg opposite ZA over the length of the l...
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