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Math- Trig

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In an oblique triangle ABC, A=30 degree, and the perpendicular from C to AB is 12 inches long. Find the length of AB.

  • Math- Trig - ,

    tan 30 = 12/AB

  • Math- Trig - eh? - ,

    Actually, you don't say that B is at the foot of the perpendicular. All we know is that the altitude from C to AB is 12. There is nothing to say how long AB is.

    In fact, we are told that ABC is an oblique triangle, indicating that it is fact not a right triangle.

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