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Right triangles and trigonometry SAT question
Math · Geometry and Trigonometry · Medium · Answer it here, explanation included.
In the figure above, what is the value of 
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ExplanationShow
Choice C is correct. Angle A is an acute angle in a right triangle, so the value of tan(A) is equivalent to the ratio of the length of the side opposite angle A, 20, to the length of the nonhypotenuse side adjacent to angle A, 21. Therefore, 
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Choice A is incorrect. This is the value of sin(A). Choice B is incorrect. This is the value of cos(A). Choice D is incorrect. This is the value of tan(B).
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