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The ornamental design for an adjustable unit circle oard for evaluating trigonometric functions and their signs, as shown and described. |
FIG. 1 is a front elevational view of the adjustable unit circle board for evaluating trigonometric functions and their signs showing my new design;
FIG. 2 is a rear elevational view thereof;
FIG. 3 is a right side view thereof
FIG. 4 is a left side view thereof;
FIG. 5 is a top plan view thereof; and,
FIG. 6 is a bottom plan view thereof.
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